... --cutting--heating--forging--heat treatment--maching--inspection. ApplicationPetroleum, chemical, power, gas, metallurgy, shipbuilding,construction, etcTypeSlip-On, Welding Neck, Blind, Socket Welding ... competitive price.We Liaoning Stellar Stainless Steel Co.,Ltd. have successively passed ISO9001: 2000 by LLOYD, got approval from DNV, BV, TUV ...