... share of about 80%. Usually, the different materialor wall thickness elbow choose different forming technology. At present, the ... socket welded elbow:Size:seamless fittings 1/2" - 20" (DN15 - DN500),welded fittings 1/2" - 48" (DN15 - DN1200) Wall thickness/ ... manufacture elbow, tee, reducer, cap, flange, cross, nipple, socket fitting, expansion joint and other series products. elbow:are widely ...