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Welded & awọn aṣọ atẹrin
Welded & Sealelly - Awọn oriṣiriṣi Awọn onipò ni Irin Alloy, irin alagbara, irin alagbara, irin alagbara, irin alagbara, irin alagbara, irin alagbara, irin alagbara. Gẹgẹbi ASTM-106, API 5 L, ASTM A53 ite A / B, ASTM A-335, ASTM A-337, ASTM64 / 3602/13602/13602/13606 ) Erw, lsaw, hsaw, efw gẹgẹ bi API 5L, ASTM A53 ite A / B, ASTM A-312, BS13387, Din 24 ...
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