Cangzhou Bohai Steel Tube Co., Ltd. specializes in producing alloy pipe elbow P91 GB / T8162-87 provisions 4.1 specification: Hot tube diameter 32 ~ 630mm. Wall thickness of 2.5 ~ 75mm. Cold-rolled (cold drawn) tube diameter 5 ~ 200mm. Wall thickness of 2.5 ~ 12mm. 4.2, the appearance of quality: the inner and outer surfaces of the steel pipe shall not have cracks, folded, rolled off, separation, hairline and scarring defects. These defects should be completely removed 90 steel elbow suppliers, the wall and the outer diameter than the negative deviation after clearing. Cangzhou Bohai Steel Tube Co., Ltd. specializes in the elbow called 16Mn high strength low alloy steel structure knot 16Mn high strength low alloy structural steel: carbon content of 0.1% -0.25% 90-degree bend steel manufacturers, adding the main alloying elements manganese, silicon, vanadium, niobium and titanium. No signs 16Mn old country will now be classified as a high-strength low-alloy structural steel grades now known as Q345, Q345 steel but is 12MnV old number, a number of alternative types of steel 14MnNb, 18Nb, 16MnRE, 16Mn, etc. and not a substitute only 16Mn steel material. 90 degree elbow National Steel Supply | Nantong 90 degree steel elbow | Cangzhou Bohai Ltd. provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) strong, credible, and other industries in Hebei Cangzhou tee accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Cangzhou Bohai and you hand into the brilliant, for a better future!