Tiêu chuẩn ASTM a53

TC hiệp hội nhà nghề Mỹ, tiêu chuẩn về ống kim loại, ống dùng trong cấp thoát nước, ống dẫn dầu, dẫn khí, thi công bằng các phương pháp ren, hàn, với các phụ kiện phù hợp, ống thép không gỉ, ống thép đen, ống thép tráng kem

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