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PN 250 MPa管子端部型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa pipe ends
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PN 250 MPa阀门、管件和紧固件 技术条件
Specifications for PN 250 Mpa valves, fittings and fasteners
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PN 250 MPa弯管型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa elbows
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PN 250 MPa异径三通、异径四通型式、尺寸和技术条件
Type, dimensions and specifications of reduced three-way and reduced four-way PN 250 Mpa valves
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PN 250 MPa异径接头型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa reduced joints
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PN 250 MPa异径管型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa reduced pipes
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PN 250 MPa阶端双头螺柱型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa stud bolts at boss
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PN 250 MPa双头螺柱型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa stud bolts
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PN 250 MPa法兰型式、尺寸和技术条件
Type, dimensions and specifications of PN 250 Mpa flanges
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PN 250 MPa阀门型式和基本参数
Types and basic parameters for PN 250 MPa valve
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