Hebei Allland Steel Pipe Manufacturing Co., LTD is one of the largest manufacturers that produce thick wall and large diameter double submerged arc welding steel pipe in China. Our factory is established in 2009, and located in Cangzhou city, Hebei province-the capital of China Pipeline Equipment.
The average working efficiency by using the submerged arc welding technology to weld the thick-wall chromium-molybdenum steel pipeline is more than 4-6 times that of the manual welding, the thickness theta of a welding wall is more than the thick-wall pipeline of 30 mm, and the working efficiency is 8-12 times that of the manual welding. China Large Diameter 219mm to 2000mm SSAW Welded As conveyer pipe in the fields of heat, and natural gas, construction pipe, ground piling pipe:Outside diameter:12.7-2820mm:Wall thickness:0.4-20mm:Length:6-12m:Technique:Double sides submerged arc welding steel pipe:Certificate:SGS:Package details:in bundles, case packing, or bulk pack
In case of sour service application the line pipe steel has in addition to withstand the aggression of corrosive media. The most economic production method for line pipes fulfilling such high quality requirements is the UOE manufacturing route with submerged arc welding process in Differences between High Frequency Resistance Welded Pipe Due to historical reasons , Most domestic trunk lines still use submerged arc welding. Longitudinal submerged arc welded pipe (LSAW) is produced by using a single medium and thick plate as the raw material, pressing (rolling) the steel plate in a mold or forming machine into a tube blank, using double-sided submerged arc welding and expanding
Jul 31, 2013 · An increase in the thickness of the wall of large-diameter pipes is accompanied by an increase in heat input during the welding of the longitudinal weld. The increased heat input results in slower cooling of the heat-affected zone (HAZ) and diminishes the reliability of the welded joint. It was shown on production equipment at the Izhorsky Pipe Plant that the heat input during welding LSAW Steel Pipe Production EquipmentLarge caliber straight double submerged arc welding pipe joints uses the most advanced domenstic hydraulic bending process, the bending machine is duplex structure, maximum lenght up to 16mm, the pressure of 1600 tons, single-equipment weighing about more than 400 tons, machinable diameter of 325-3250 mm and the wall thickness 6-30 mm of ordinary and special steel pipe.
Arntzen Corporation operates pipe mills in 2 locations with 200,000 square ft under roof and 35 acres of additional outdoor storage. With over 17 plate rolls and this large facility, it allows us to carry an immense inventory of steel plate and convert it quickly into a steel casing pipe, resulting in shorter lead times. Large diameter steel pipe Manufacturer China - COSASTEELLarge diameter steel pipe:Standard:API 5L, SY/T5040, GB/T9711.1,L175-L555,L245NB :Material:Q235, Q345, X52, X60, X70, X80, L245, L290, X42:Out Diameter:200mm-3200mm:Wall Thickness:3mm-30mm:Length:5.8m-11.8m,or as customer's requirements. Technique SSAW, ERW,LSAW, HSAW:Surface varnish coating / galvanized / 3PE/ 3PP/ FBE
When operational conditions require high wall thickness due to high internal or external pressures, LSAW (Longitudinal Submerged Arc Welding) pipes are commonly the most economical solution. The LSAW pipe diameter range is larger than ERW (Electric resistance welding), normally from 16 inch (406 mm) to 60 inch (1500 mm). Manufacturer quality large diameter welded steel pipe for 3. Wide range of product specifications, can produce small diameter, large wall thickness, but also can produce large diameter, large wall thickness of steel pipe. 4. The steel pipe has a longitudinal weld, and the internal and external welds are welded by a submerged arc welding
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Jun 04, 2020 · Pipe welding basics. Welders often have a lot of questions about welding different kinds of pipe, from high-pressure and high-purity pipe for food and beverage industries to pipe for oil and gas applications. There are many common issues in pipe welding and fabrication that can lead to problems. The Difference Between Straight Seam Steel Pipe and Spiral The spiral welding is mainly used for large diameter welded pipes. In addition, according to the submerged arc welding process specification, each weld should have an arc ignition point and an arc extinguishing point. However, each straight seam steel pipe cannot meet this condition when welding the circumferential seam.
Jun 03, 2018 · Ensure welding quality, otherwise spiral submerged arc welded pipe should not be used in important steel structure occasions. 3, the scope of application LSAW pipe adopts double-side submerged arc welding process. Welding under static conditions, the quality of the weld is high, the weld is short, and the probability of defects is very small. Welding Pressure Pipeliners and Piping SystemsThis booklet is a guide to welding pipe with Shielded Metal Arc Welding (SMAW) and double ending pipe using automatic welding. Lincoln Electric supplies electrodes, power sources, automatic and semiautomatic wire feeders, submerged arc wire and flux, which are the industry standards for pipeline construction around the world.
The average working efficiency by using the submerged arc welding technology to weld the thick-wall chromium-molybdenum steel pipeline is more than 4-6 times that of the manual welding, the thickness theta of a welding wall is more than the thick-wall pipeline of 30 mm, and the working efficiency is 8-12 times that of the manual welding.