Alloy steel pipe 合金钢管英文 ; 而成 ; 硼钢管 ; 合金钢管
ferritic alloy steel pipe 铁合金钢管 ; 铁硼钢管
Ferric alloy steel pipe 铁素体合金钢管
low-alloy-steel-pipe 低合金钢管
alloy-steel pipe clamp 合金钢制管卡
low alloy steel pipe 低合金钢管
Alloy Steel pipe fittings 合金管件
Alloy-Steel Pipe Clrev 合金钢制管卡
Since 2011 carbon and alloy steel seamless pipes for synthesis of carbon steel pipe and outer pipe project of Inner Mongolia Donghua Energy Co., Ltd.
2011年起供内蒙古东华能源有限责任公司合成碳钢管道和外管项目用合金管和碳钢管。
With the development of Sinopec and the increasing proportion of the Sulfur in petroleum, the demand of the alloy steel pipe used in Sinopec producing equipments is unceasingly increasing.
随着中石化原油加工量及原油含硫比例的不断提高，中石化生产装置用合金钢管的需求量不断加大。
The present invention discloses a manufacture method for a composite layer of a complex alloy steel pipe, a fastening element, and a protective grating.
本发明公开了一种多元合金钢管、紧固件、防护栏复合层的制作方法。
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