... , 300LB, 600LB, 900LB, 1500LB, 2500LB Connection Butt Weld & Socket Weld & Thread Standard ANSI, JIS, DIN Material Carbon, Stainless, Alloy Certificate API ... drawing or send sample to usQingdao Jowon Mechanical and Electrical Co., Ltd. offers production and operation of casting products, auto parts, textile ...