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o型密封圈规格大全o型橡胶密封圈o型密封圈规格表

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o型密封圈规格大全o型橡胶密封圈o型密封圈规格表o型密封圈规格大全o型橡胶密封圈o型密封圈规格表 o型密封圈规格大全o型橡胶密封圈o型密封圈规格表 o型密封圈规格大全o型橡胶密封圈o型密封圈规格表 O形圈规格型号主要有UHSO型圈规格,UHPO型圈规格,UNO型圈规格,DHO型圈规格,活塞杆O型圈规格,耐高温O型圈,耐高压O型圈,耐腐蚀O型圈,耐磨损O型圈。 O形圈应用介绍: 孔用YX型O型圈 产品用途:用于往复运动液压油缸中活塞的密封。适用范围:TPU:一般液压缸、通用设备液压缸。CPU:工程机械用液压缸及高温、高压用油缸。材质:聚氨酯TPU、CPU、橡胶。 产品硬度...
o型密封圈规格大全o型橡胶密封圈o型密封圈规格表
o型密封圈规格大全o型橡胶密封圈o型密封圈规格 o型密封圈规格大全o型橡胶密封圈o型密封圈规格表 o型密封圈规格大全o型橡胶密封圈o型密封圈规格表 O形圈规格型号主要有UHSO型圈规格,UHPO型圈规格,UNO型圈规格,DHO型圈规格,活塞杆O型圈规格,耐高温O型圈,耐高压O型圈,耐腐蚀O型圈,耐磨损O型圈。 O形圈应用介绍: 孔用YX型O型圈 产品用途:用于往复运动液压油缸中活塞的密封。适用范围:TPU:一般液压缸、通用设备液压缸。CPU:工程机械用液压缸及高温、高压用油缸。材质:聚氨酯TPU、CPU、橡胶。 产品硬度:HS85?2?A 工作温度:TPU:- 40,+80?,CPU:-40,+120? 工作压力:?32Mpa 工作介质:液压油、乳化液。 YX型孔用挡O型圈 产品用途:本适用于油缸工作压力大于16MPa时配合YX型密封圈使用,或油缸偏心受力时,起保护密封圈的作用. 工作温度:-40,+100度。工作介质:液压油、乳化液、水 产品硬度:HS 92?5A 材 质:聚四氟乙烯。 轴用YX型O型圈 产品用途:用于往复运动液压油缸中活塞杆的密封 适用范围:TPU:一般液压缸、通用设备液压缸。 CPU:工程机械用液压缸及高温、高压用油缸。材质:聚氨酯TPU、CPU、橡胶 产品硬度:HS85?2?A 工作温度:TPU:- 40,+80? CPU:-40,+120? 工作压力:?32Mpa,工作介质:液压油、乳化液。 O形圈密封性能优良,工作寿命高,动态压力密封工作寿命比常规橡胶密封制品高5—10倍,最高可达数十倍,在某些条件下可与密封基体同寿命。 O形圈摩擦阻力小,动、静摩擦力相等,是“0”形橡胶圈摩擦力的1/2—1/4,可消除低速、低压下运动的“爬行”现象。 O型圈高耐磨,密封面磨损后具有自动弹性补偿功能。 O型圈良好的自润滑性能(可作无油润滑密封。 O型圈结构简单,安装方便。 O型圈工作压力:0-300MPa;工作速度:?15m/s;工作温度:-55-250度。 O型圈适用介质:液压油、气、水、泥浆、原油、乳化液、水-乙二醇、酸。 欢迎登陆:O形圈 2.O形圈适用范围 O形密封圈适用于装在各种机械设备上,在规定的温度、压力、以及不同的液体和气体介质中,于静止或运动状态下起密封作用。在机床、船舶、汽车、航空航天设备、冶金机械、化工机械、工程机械、建筑机械、矿山机械、石油机械、塑料机械、农业机械、以及各类仪器仪表上,大量应用着各种类型的密封元件。O型密封圈主要用于静密封和往复运动密封。用于旋转运动密封时,仅限于低速回转密封装置。O型密封圈一般安装在外圆或内圆上截面为矩形的沟槽内起密封作用。 O型密封圈在耐油、酸碱、磨、化学侵蚀等环境依然起到良好密封、减震作用。因此,O型密封圈是液压与气压传动系统中使用最广泛的一种密封件。 3.O型圈的优势 O型密封圈与其他型式密封圈比较,具有以下优点: --适合多种密封形式:静态密封、动态密封 适合各种用途材料,尺寸和沟槽都已标准化,互换性强 --适合多种运动方式:旋转运动、轴向往复运动或组合运动(例如旋转往复组合运动) --适合多种不同的密封介质:油、水、气、化学介质或其它混合介质 通过选用合适的橡胶材料和适当的配方设计,实现对油、水、空气、煤气及各种化学介质有效的密封作用。温度使用范围广(, 60 ?,+ 220 ?),固定使用时压力可达 1500Kg/cm2( 与补强环并用 )。 --设计简单,结构小巧,装拆方便 O 形圈断面结构极其简单,且有自密封作用,Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test 密封性能可靠。 由于 O 形圈本身及安装部位结构都极其简单,且已形成标准化,因此安装更换都非常容易。 --材料品种多 可以根据不同的流体进行选择:有丁腈橡胶(NBR)、氟橡胶(FKM)、硅橡胶(VMQ)、乙丙橡胶(EPDM)、氯丁橡胶(CR)、丁基橡胶(BU)、聚四氟乙烯(PTFE)、天然橡胶(NR)等 --成本低廉 --动摩擦阻力比较小 显的提高。 氟橡胶密封圈规格表 特性:高温、油、酸 主要用于汽车、传感器、医疗、制药、阀门、泵、卫浴、轴承、电器、火箭等要求有耐真空、耐摩擦、耐高温、耐化学腐蚀等的密封材料, 耐酸碱,耐油性是耐油橡胶中最好的抗辐射、耐高真空性能好;电绝缘性、机械性能、耐化学腐蚀性、耐臭氧、耐大气老化性均优良 硅胶密封圈规格表 适用范围 汽车、门窗、电器、轴承、其他 性质 耐高温、耐高压、耐腐蚀、其他 作用 防尘密封 是否进口 否 耐寒耐高温。无害无毒无味;优异的耐臭氧老化、耐氧老、耐光老化和耐候老化性能; 3)优良的电绝缘性能; 天然橡胶密封圈规格表 NR 弹性好,耐酸碱 适用于制作减震零件、在汽车刹车油、乙醇等带氢氧根的液体中使用的制品。 氯丁胶密封圈规格表CR 具有较强的耐燃性和优异的抗延燃性,其化学稳定性较高,耐水性良好 如用来制作运输皮带和传动带, 电线、电缆的包皮材料,制造耐油胶管、垫圈以及耐化学腐蚀的设备衬里 o型密封圈的应用范围与特征 O型橡胶密封圈广泛用于内燃机车、汽车、拖拉机、工程机械、机床及各种液压气动元件等密封,可承担固定、往复和旋转运动的密封,在机械产品的密封中O型橡胶密封圈占50%以上。根据需要,可生产用于耐高温、低温真空、高压和不同介质的各种特殊用途密封圈及异形橡胶密封制品。O型橡 O型密封圈特征: 1、结构简单、密封性能好,O型橡胶密封圈断面结构极其简单,且有自密封作用,密封性能可靠。 2、安装方便由于O型橡胶密封圈本身及安装部位结构都极其简单,且已形成标准化,因此安装更换都非常容易。 3、适用范围广通过选用合适的橡胶材料和适当的配方设计,实现对油、水、空气、煤气及各种化学介质有效的密封作用。温度使用范围广 ,60?,+220?),Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test 固定使用时压力可达1500Kg/cm2(与补强环并用) 4、种类丰富适合各种用 途材料,尺寸和沟槽都已标准化, Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test Ellipticity of elbow pipes with diameters less than or equal to 150 mm must be not greater than 8% diameter of 200 mm or less shall not be greater than 6%. Wall thickness of the pipe wall thinning rate must not exceed the original 15%. Crease roughness: diameter 125 mm or less, shall not exceed 3 mm diameter less than or equal to 200 mm, not more than 4 mm. 7.3.9 simmering bending production of square steel tube extension, to use the whole tube bending. Interface if necessary, the welding position should be located in the middle of the vertical arm. 7.3.10 install expansion joints should be done. If design is not required, pipe compensator lengthen should conform to the requirements in the following table: square scale length δ x is equal to 1/2. Pre stretch tolerance: casing + 5 mm, +10 mm. 7.3.11 pipe form, location, spacing shall meet the design and specifications. 7.3.12 piping on back or return pipe at higher levels of the upper to automatic valve to install a drain valve below the horizontal parts. 7.3.13 supports and hangers of checks and the number 1) hanger installed must be checked before installation of supports and hangers part models, specifications of springs setting values, whether the materials meet the requirements of drawings and documents; 2) supports and hangers of material, size and accuracy shall conform to the provisions of the design drawings, material technical requirements should be consistent with national standards, industry standards and technical requirements related to the alloy spectrum review should be carried out; 3) pipe supports and hangers part plant product quality certificate for each variable spring supports, constant support hangers, dampers, damper function, there should be factory calibrated test
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