Carbon steel pipe fittings  is the most widely used pipe fitting product. The main materials are Q235, 20 # 35# 45# 16 Mn. The main products include carbon steel elbow, carbon steel flange, carbon steel tee, carbon steel cross, carbon steel reducer (reducer), carbon steel head (CAP), etc. The main executive standards include national standard, American Standard and Japanese standard,Contact kuntai sales for details.