我公司提供不同钢级、多种规格的ERW石油钢管。
Our company can provide various steel grade and specification ERW oil pipes.
表壳：高钢级。
钢：中国拟建立百万吨级的国家钢储备。
Steel: China is considering building a million ton scale national steel reserve.
与产品接触的不锈钢表面，抛光到4级。
Stainless steel surfaces in contact with the product, polished to grade 4.
与产品接触的不锈钢表面，抛光到4级。
Stainless steel surfaces in contact with the product, polished to grade 4.
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