按磷、硫含量可以把碳素钢分为普通碳素钢（含磷、硫较高）、优质碳素钢（含磷、硫较低）和高级优质钢（含磷、硫更低）和特级优质钢。 优质碳素钢按其含碳量多少分为低碳钢（含碳量低在0．25%－0.5%之间）和高碳钢(含碳量大于0.5%)。按含锰量分为普通含锰量和高含锰量两大类。按钢中杂质Ｓ、Ｐ含量不同分为优质钢、高级优质钢、特级优质钢。这类钢必须同时保证钢的化学成分和机械性能的要求。压力容器上常用的钢种有２０号、３５号钢等，这类钢的国家标准是ＧＢ６９９－９９
... PTEF,Soft graphite 不锈钢 Stainless steel 优质碳钢 CJ123多功能压力表针型阀主要性能规范 ...
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... Stainliess steel 聚四氟乙稀、柔性石墨 PTEF,Soft graphite 橡胶石棉板 Latex asbestos 优质碳钢 ...
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... 柔性石墨Flexible graphite 优质碳钢High-grade carbon steel 可锻铸铁Forgeable cast-iron ...
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优质碳素钢 Fine Steel Casting iron ; High-quality Carbon Steel ; quality carbon steel ; fine carbon steel
优质碳素结构钢 Quality carbon structural steel ; carbon constructional quality steel ; improved carbon structural steel ; quality carbon structure steel
优质碳素结构钢丝 Carbon constructional quality steel wires
高级优质碳素钢 high-grade fine carbon steel
优质碳素钢板 Carbon Steel Plate
优质碳素钢盘条 Quality carbon steel wire rods
优质碳结钢 Quality Structural Steel
优质碳素钢板以及型材 Carbon Steel Plate
本产品由优质碳钢制成，外表镀锌。
The production is made of quality carbon steel, surface is plated with zinc.
钳口采用优质碳钢锻造，钝化处理，可锻铸铁柄柄部占塑！
Mobile jaw drip-forged with high quality carbon steel, inactivate treatment, malleable cast iron handle and drip.
鄂式闸门采用优质碳钢焊接成形，结构独特，运行灵活可靠，无卡阻现象。
The valve is welded in fine steel, having the features of peculiar structure, non-obstruction, reliable and flexible operation.
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