... 1/2"--48" (DN15--DN1200) 3, Certification:SGS Specialized in producing elbow Features: 1) Type: butt welded and ... , 347H,S31803,904L,)6) Applications range: For use in the petroleum, smelting, foodstuff, power, papermaking, chemical, ... requests. Tianjin Haozeshun steel trade Co.,Ltd. is an international steel enterprise, and takes "expanding ... higher and better service Specialized in producing elbow