Qingdao Haotan Auto Parts Co.,ltd is a professional manufacturer of precision cold drawn/rolled seamless steel and ERW tubes located at Auto City, Jimo City，Qingdao China.
We specialize in producing cold drawn/rolled seamless steel tube, OD from 19mm to 121mm and WT from 1mm to 15mm according to the Normal standards as GB/T 13793-1992, ASTM A500, A179, DIN 2394, EN10305, BS 1387 and JIS 3445 etc. with material of carbon steel and alloy steel,normal steel grade like STKD270, STKD540, S15C, S25C, S35C, S45C, 34MNB5, 20Cr, 40Cr, Q345b, 30CrMo, 35CrMo, STKM11A-13C, SAE1010 /1020 /1045, EN8D etc...
We are professional manufacturer for ERW steel tubes and equipped with 10 sets advanced welding pipe production lines, we can produce 200 sizes, OD from 8mm-165mm, thickness 0.8-5.0mm. includes square/ rectangular/round/oval pipes and other special-shaped pipes, pre-galvanized pipes and painted pipes. Normal standards as GB/T 13793-1992, ASTM A500, DIN 2394, EN10305, BS 1387 and JIS 3445 etc. all of which are used for fitness equipment, medical equipment, bicycles, steel furniture, display stands, shelves and motorcycles.
We are supplier of Hyundai China, VW China, and our end user includes Toyota North America, and Chrysler North America.
Our trading company is China Effort Holdings Limited.