pipe welding procedures
As for the technical performance of commercial flux, it is a common practice in the industry at present to give its chemical composition and welding wire cladding metal mechanical properties, sintering flux only gives its slag system composition and welding wire cladding metal mechanical properties.It doesn't seem practical enough.Very few users of chemical composition analysis of flux batch by batch, because in addition to the analysis method and equipment difficulties, the results and user requirements are still far away.Flux manufacturers are advised to include the following technical information in their product descriptions.The first is the alkalinity of the flux, which can be calculated according to the recommended IIW formula.In the national standard for welding flux for low alloy and high strength steel, this is also explained in GB12470, flux for submerged arc welding of low alloy steel.The alkalinity of flux is the first technical index of flux metallurgical performance, process performance, current type and grade of weldable steel.The second is to provide the most suitable for matching the use of several welding wire cladding metal mechanical properties, users have a larger space to choose materials.In particular, it is recommended that flux manufacturers provide flux metallurgical behavior diagram, that is, the structure of steel flux on the alloy elements of the loss - transition diagram (refers to silicon increase, manganese content of the wire content of the percentage of neutral point), stainless steel flux carbon trend and chromium content of the loss - transition diagram.In this way, the user can according to the chemical composition of the selected welding wire, flux of gold element damage, transition effects, factors such as joint type and welding procedure parameters, predict the chemical composition and mechanical properties of weld metal, and its technical requirements for welding products, has a direct reference, in terms of the technical capability of flux industry manufacturers, complete this work does have some difficulty, suggested they cooperate with scientific research units, large users, can reflect the enterprise flux products characteristics, high technology content of product manuals.Furthermore, scientific research institutes can develop such software for users to use or supplement existing computer expert systems for welding technology.
Cangzhou Steel Pipe Group (CSPG) Co., Ltd. is a large-sized, key metallurgic enterprise of Hebei Province in North China, whose history dates back to 1994. CSPG currently em/paces six member companies with products varying from SSAW, LSAW, ERW, seamless steel pipes to 3PE pipes, galvanized pipes, casing pipes, etc. A Joint-stock corporation, CSPG occupies an area of 600,000 square meters with a total asset of $530 million.
Specialized in the production of straight welded pipe spiral pipe galvanized pipe 3PE/3PP/FBE/TPEP internal and external epoxy powder internal and external epoxy resin cement mortar two cloth three oil buried pipeline IPN8710 non-toxic drinking water internal and external plastic coated lining plastic and other anti-corrosion pipe fittings for oil and gas pipeline water conservancy projects
Executive standard :DIN30670 DIN30678 CSA Z245 AFNOR nf49-710/711 NACE rp0394/0490 AWWAC 210/C213GB/T9711 API 5L ISO 3183Material: Q235B/Q355BGR A GR B x42-x80 l245-l555
Business scope: 21.3mm-3620mmLSAW submerged arc welded pipe 325-2020mmERW straight welded pipe 6mm-711mmSMLS seamless tube 10-1120mmSSAW spiral steel tube 219-3620mmDemand for quality suppliers and partners