Improvement Improvement of Hot Dip Galvanizing Techniques for Threaded Type of OCS Fittings

螺纹类接触网 零件热浸镀锌工艺改进

Forged steel threaded pipe fittings high pressure bellows manometer

GB/T14626-1993锻钢制 螺纹 管件高压波纹管式压力计

Forged steel threaded pipe fittings Structural steel grades and mechanical property for forgings

GB/T14626-1993锻钢制 螺纹 管件GB/T17107-1997锻件用结构钢牌号和力学性能

These standards now cover Schedule PVC ( D-2467 ) and CPVC ( F-439 ) Socket Type as well as Threaded Pressure Fittings .

这些标准现在涵盖目录PVC（D-2467）和CPVC（F-439）承插类型，以及 螺纹压力 连接 件。