Carbon steel elbow first by its radius of curvature can be divided into long radius elbows and short radius elbow. Long radius elbow It has a radius of curvature equal to 1.5 times the pipe diameter, i.e. R = 1.5D. Short radius elbow its radius of curvature is equal to the outer diameter of the tube, R = 1.0D. (D elbow diameter, R is the curvature radius. D X can also be used.) The press pressure rating, stars, about seventeen kinds of standard tube and the United States are the same, there are: Sch5s Sch10s, Sch10 , Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, which is the most common STD and XS. Elbow angle, 45 ° elbow, 90 ° elbow and 180 ° elbow. Implementation of the standards GB/T12459-2005, GB/T13401-2005, GB/T10752-1995, HG/T21635-1987, D-GD0219 and so on. Carbon steel can be divided into: 10 # 20 # A3 Q235A 20g Q345B 20G 16Mn ASTM A234 ASTM A105 ASTM A403, etc. can be called with these materials for the production of raw materials elbow carbon steel elbow angle: 45 °, 90 °, 180 ° three commonly used elbow, and another project needs special customization, such as 60 ° or other angles. Link: carbon steel pipe welded, flanged, threaded connections, socket connections form. In accordance with the form of process can be divided into: welding elbow, pressing elbow, cast elbow. Usage: connecting two tubes, the tubes can be at right angles, 45 ° or 180 ° direction. Manufacturing standards: GB, American standard, Japanese standard, German standard, the Russian standard. Carbon steel elbow basic process is: First weld a cross-section polygon polygonal ring shells or both ends closed polygonal fan-shaped shell, internal washed over the pressure medium, facilities within the pressure, internal pressure, cross-sectional gradually turned into a circle by a polygon, and eventually become a circular ring shells. According to the needs of a circular ring shells can be cut into four 90 ° bends or six 60 ° elbows or other specifications of the elbow, the process is suitable for manufacturing elbow diameter elbow diameter ratio greater than 1.5 times Specifications large elbow is the ideal method for the manufacture of large carbon steel elbow. The advantage of the production process of the carbon steel elbow is mainly manifested in the following aspects: without the tube as raw material, pipe equipment and tooling costs can be saved, and can be obtained arbitrarily large diameter and wall thickness of relatively thin carbon steel elbow . Blank tablet or a developable surface, thus cutting simple, easy to ensure accuracy, easy assembly and welding. Due to the above two reasons, the manufacturing cycle can be shortened, the production cost is greatly reduced. Does not require any special equipment, especially for on-site processing of large carbon steel elbow. Carbon steel elbow for the oil, gas, chemical, water, electricity, construction and boiler piping system industries. Hebei Guang Hao Pipe Fittings Co., Ltd. is a manufacturing enterprise specializing in the production of steel elbow flange fittings. Is located in the famous Chinese elbow pipe fittings are - Hebei Province mengcun Hui Autonomous County. East of State Road 205, west of Beijing-Shanghai high-speed, Bohai Bay in the north, Huanghua Port and Beijing and Tianjin, and convenient transportation. The company was founded in 2000, has more than 300 people, 85 senior engineers and technicians. Covers an area of ??150,000 square meters, construction area of ??30,000 square meters with a registered capital of 71.18 million yuan, 90 million yuan of total assets. 2011 sales revenue of 3.85 billion yuan, profits of 10 million yuan. Among the county's pillar industries - the first of the four leading enterprises of elbow pipe industry. The company has advanced pipe production line 8, flange 5 production lines. Has the full IF elbow push hot machine, the diameter pipe hot mold presses, three-way cold extrusion hydraulic press, forging hammer, vertical lathe, drill press and other production elbow flange fittings molding process, machining equipment, which Φ1020mm large diameter IF hydraulic push the system machine, Φ1420mm large diameter IF simmer bending machine, Φ2438 four thousand tons of large hot mold press fittings industry the most, the annual production capacity of 8 million tons. According to customer requirements producing national standard, American standard, German standard, Japanese standard, non-standard: high, medium and low voltage of various models of carbon steel, stainless steel, alloy steel flanges, elbows, bends, reducers pipe , tee, cross, head, pipe caps and threaded, socket series piping component products. Is a product of how far "aircraft carrier" flanged fittings manufacturers. Meanwhile, the company is also equipped with a spectrum direct-reading instrument, including a full set of advanced physical and chemical testing, nondestructive testing, heat treatment, hydrostatic testing, product quality testing equipment to provide a reliable guarantee for the production of quality products. "Create Yuanguanghao brand Hing national industry" is the relentless pursuit of Kwong-ho. The company grows, always adhere to the "scientific management quality-oriented" business philosophy. Pipe fittings manufacturing enterprises in the county through the first ISO 9001:2000 quality management system certification and pressure piping components manufacturing license, and the first United States API Certification. Over the years, a large number of quality products and services for the petroleum, chemical, shipbuilding, medicine, electricity, paper and other industries widely praised. Has become the designated enterprise of China National Chemical Engineering Corporation, China Classification Society sentinel enterprises, China Petrochemical Material & Equipment Corporation supply network members supply network member of China National Petroleum Corporation, a member of the National Power Corporation power plant parts supply network. I always adhere to the "loyal and trustworthy customer service, quality brands contributing to society" business principles, reputation first, integrity management. Were awarded the science and technology enterprises in Hebei Province, civilized enterprise, rest assured that the quality of the project integrity unit of the Joint Convention on the integrity of Cangzhou City, the sixth consumer trust units, the provincial contract and credit enterprise and many other honors. Learning, and beyond, leading the company's entrepreneurial spirit, we will be more like Cheng is committed to the cause of the tube, to 100 times the prosperity and development of cooperation in good faith with the majority of customers at home and abroad to create brilliant!