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钢制人孔和手孔的类型与技术条件
Technical specification of steel manholes and handholes
参考页数：52P.;A4
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梁型气体喷射式填料支承板
Beam Type Gas Injection Packing Support Plate
参考页数：38P.;A4
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变力弹簧支吊架
Variable spring supports
参考页数：38P.;A4
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钢制管法兰、垫片、紧固件选配规定(Class系列)
Specification for selection of steel pipe flanges,gaskets and bolting(Class designated)
参考页数：17P.;A4
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钢制管法兰用紧固件(Class系列)
Bolting for use with steel pipe flanges(Class designated)
参考页数：30P.;A4
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