API, CE, PED, GOST, LRQA, ISO 9001certificate Product Catalogue 1, Intermediate frequency bends 2, Seamless elbows from D22mm to D820mm 3, Seamless tees, reducers, and caps from D25mm to D820mm 4, Pipe fitting made of steel plate from D630mm to D3320mm 5, Socket welding pipe fittings from D3mm to D159mm 6, High-medium-low pressure flanges and blind flanges from D18mm to D2420mm 7, Barred Tees from D18mm to D1220mm 8, Factory piping assemblies from D18mm to D1420mm