Finished pipe materials and special thick-walled tube 18000 tons, forming a middle class.
材质的成品管及特殊厚壁管18000吨，形成了产。
Then, they introduced the advantages of W-bend forming and its application in thick-walled tube production.
并介绍了与单半径孔型和双半径孔型比较，W成型的优点及在厚壁管生产中的应用实例。
In a separate use or for the thick-walled tube welding, heat-resistant steel should use low hydrogen electrodes.
在单独使用或用于厚壁管焊接时，应选用低氢耐热钢焊条。
The elastic-plastic stress and displacement fields of cylindrically orthotropic composite thick-walled tube under uniform radial pressure are studied.
研究了在均匀径向压力作用下圆柱正交异性复合厚壁圆筒的弹-塑性应力场和位移场。
The relative formulations between limit loads (both axial force and internal pressure ) acting on it are derived while the whole thick-walled tube is led to the yielded state.
当整个厚壁圆筒达到屈服状态时，推导了在内压力和轴向力联合作用下的厚壁圆筒的塑性极限载荷表达式。
The mechanical autofrettage of thick-walled cylinders is a sort of practical and valuable technique used to enhance its elastic strength of thick-walled tube and increase its fatigue life.
厚壁圆筒机械自紧技术是一项有实用价值的工艺技术。它可提高厚壁圆筒的弹性强度和疲劳寿命。
The conclusions are applicable to the case where the inner tube is thin-walled or thick-walled in comparison with available literatures.
通过与已有文献的比较，得出的结论同时适用于内层管为薄壁管和厚壁管的情况。
Professional factory production: forging stainless steel ring, mechanical seal parts, thick-walled stainless steel tube, and other kinds of non-products and accessories.
本厂专业生产：锻件特种不锈钢材料、机械密封配件、不锈钢厚壁管子等产品及各种非标配件。
Professional factory production: forging stainless steel ring, mechanical seal parts, thick-walled stainless steel tube, and other kinds of non-products and accessories.
本厂专业生产：锻件特种不锈钢材料、机械密封配件、不锈钢厚壁管子等产品及各种非标配件。
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