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JB/T 1308.9-1999 PN250a Joint nut types, dimensions and technical requirements
JB/T 1308.9-1999
JB/T 1308.8-1999 PN250a Internal and external nut types, dimensions and technical requirements
JB/T 1308.8-1999
JB/T 1308.7-1999 PN250a Screw type, size and technical requirements
JB/T 1308.7-1999
JB/T 1308.6-1999 PN250a Conical pads, conical blind pads types, dimensions and technical requirements
JB/T 1308.6-1999
JB/T 1308.5-1999 PN250a recessed joint types, dimensions and technical requirements
JB/T 1308.5-1999
JB/T 1308.4-1999 PN250a Neck joint types, dimensions and technical requirements
JB/T 1308.4-1999
JB/T 1308.3-1999 PN250a pipe end types, dimensions and technical requirements
JB/T 1308.3-1999
JB/T 1308.2-1999 PN250a Technical requirements for valves, fittings and fasteners
JB/T 1308.2-1999
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