Lap joint stub end The pipe fittings and flanges supplied by our company include the following: 1, rid elbows, manifold; 2, pipe fittings and flanges of special materials, such as: hastelloy, cu-ni alloy, Ni alloy, zr alloy, ti alloy, low-temperature alloy, austenitic stainless steel, Duplex stainless steel, super duplex stainless steel, inferior duplex stainless steel etc.. As per customers' requested