Thus three welding crafts can be used in the fabrication of offshore jacket structure directly and the offshore jackets need no heat treatment after welding.
所评定的三项焊接工艺可以直接用于海洋平台导管架建造，焊后允许不进行热处理。
Inexpensive materials, simple crafts, reasonable structure and flexible form embody the consideration of building low-cost constructions.
廉价的材料、简单的工艺、合理的构造与灵动的形式体现着对低造价建筑营造的思考。
Our products have many advantages, e. g. safe and reliable, reasonable structure, precise crafts, convenient operation, etc.
产品具有安全可靠、结构合理、工艺严谨、操作轻便等优点。
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