carbon-steel-pipe

Our company can according to customer demand processing carbon steel pipe, please contact us by phone.

Seamless carbon steel pipe is steel ingot or a solid tube made of wool through the perforated pipe, and then through the hot-rolled, cold-rolled or cold call is made. Seamless carbon steel pipe in China's steel industry has an important position. Seamless carbon steel pipe, according to incomplete statistics, China's current production of seamless carbon steel pipe is about more than 240 enterprises, seamless carbon steel pipe is about more than 250 sets of units, annual production capacity of approximately 450 million tons. From the caliber to see, <φ76, accounting for 35%, <φ159-650, accounting for 25%. From the variety, the general purpose pipe 1.9 million tons, accounting for 54%; oil pipe 760,000 tons, accounting for 5.7%; hydraulic prop, sophisticated government's 15 million tons, accounting for 4.3%; stainless steel tube, bearing tube, auto tube a total of 50000 tons, accounting for 1.4%.

Our company can according to customer demand processing carbon steel pipe
Seamless carbon steel pipe raw material is round tube, round tube embryos to go through cutting machine cutting growth of about 1 meter blanks degrees, and sent by conveyor belt inside the heating furnace. Billet into the furnace was heated, the temperature is about 1200 degrees Celsius. Fuel hydrogen or acetylene. Furnace temperature control is a crucial issue. Round to go through the pressure tube came out wearing an empty punch machine. Generally more common piercing machine is tapered roller punching machine, this punch high production efficiency, product quality, large diameter perforated expansion can wear a variety of steel. After perforation, round tube has been on the three-roll cross rolling, rolling, or extrusion. Extrusion after going off-tube diameter. Sizing Mill high-speed rotation through the conical drill hole into the steel embryo to form a steel pipe. Diameter steel pipe by the sizing mill to determine the length of the drill diameter. After the pipe through the sizing into the cooling tower, through the water spray cooling, steel pipe after cooling, you'd be straightening. After straightening steel conveyor belt sent after the metal detection machine (or the pressure tests) for internal testing. If the pipe internal cracks, bubbles and so on, will be detected. After the tube but also through strict quality control manual selection. After the steel quality inspection, using paint numbers, specifications, production batch number and so on. Hanging by a crane into the warehouse.
Specifications: the specifications of seamless steel pipe with outside diameter * wall thickness of a few millimeters, said.
Seamless carbon steel tube Category: hot-rolled and cold-rolled seamless steel pipe points (dial) seamless steel tube types.
Hot-rolled seamless steel pipe sub-normal, low, medium pressure boiler steel pipes, high-pressure boiler steel pipe, steel pipe, stainless steel pipe, oil cracking pipe, steel pipe and other pipe and so on geology.
Cold (dial) Subject to sub-normal seamless steel pipes, low and medium pressure boiler steel pipes, high-pressure boiler steel pipe, steel pipe, stainless steel pipe, petroleum cracking tubes, other steel pipes, but also includes thin-walled carbon steel, alloy thin-walled steel pipe, thin-walled stainless steel pipe, shaped steel tube. Hot-rolled seamless pipe diameter typically greater than 32mm, wall thickness 2.5-75mm, cold-rolled seamless steel pipe at Trail can go to 6mm, wall thickness can be 0.25mm, outer diameter thin-walled tube can be 5mm, wall thickness less than 0.25 mm, cold rolled size than the high accuracy.
General seamless steel pipes: 10,20,30,35,45 and so on is high-quality carbon structural steel 16Mn, 5MnV low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB such as hot-rolled or cold-rolled steel made. 10,20 and other low-carbon steel seamless pipe manufacturing is mainly used for liquid pipelines. 45,40 Cr, etc. made of carbon steel seamless pipe used to make machine parts, such as cars, tractors force components. General seamless steel pipes to ensure the strength and flattening test. Hot-rolled steel with hot-rolled state or heat treatment delivery; cold-rolling to heat treatment delivery.

Our company can according to customer demand processing carbon steel pipe
Low and medium pressure boiler seamless steel pipe: for the manufacture of a variety of low and medium pressure boiler, superheated steam pipes, boiling water pipe, water-wall tube and superheated steam locomotive boiler pipes, opium pipe, small pipe and pipe arch bricks. With high-quality carbon structural steel hot-rolled or cold-rolled (call) seamless. No. 10,20 steel is mainly used, in addition to chemical composition and mechanical properties to ensure things do pressure test, curling, expansion port, squash and other tests. To the state of delivery hot rolled, cold-rolled (allocated) to heat treatment delivery.
High Pressure Boiler Tube: mainly used to manufacture high pressure steam boiler and above pipeline, etc. with high quality carbon structural steel, alloy structural steel and heat-resistant stainless steel seamless steel tubes, the boiler tubes are always in high temperatures and high pressure work, tubes in high-temperature flue gas and water vapor will happen under the effect of oxidation and corrosion, thus requiring a durable steel pipe with high strength, high oxidation resistance, and has good organizational stability, use of steel are: high-quality carbon structural Steel steel with 20G, 20MnG, 25MnG; alloy structural steel steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc.; a rusty heat-resistant steel used 1Cr18Ni9, 1Cr18Ni11Nb Apart from ensuring high-pressure boiler tubes chemical composition and mechanical properties of outer should be done by the root water pressure test, to make Flaring, flattening test. Steel heat treatment to state delivery. In addition, finished steel microstructure, grain size, there are certain requirements decarburization layer.
Geological drilling and oil drilling seamless steel pipe: In order to investigate underground rock, underground water, oil, gas and mineral resources, the use of drilling wells. Oil, natural gas and even less from wells, geological drilling seamless steel tubes for oil drilling is the main drilling equipment, mainly outside the core tube, core tube, casing, drill pipe and so on. As the drilling pipe and reach out to thousands of meters deep stratum of work, working conditions is extremely complex, drill pipe to withstand tensile, compressive, bending, torsion and non-equilibrium impact loading such as stress, but also by the mud, rock wear, therefore, required pipe must have sufficient strength, hardness, wear resistance and impact toughness of steel pipe with the "DZ" (Hanyu Pinyin geology prefix) plus the number one on behalf of steel yield point that the commonly used steel has DZ45 of 45MnB, 50Mn; DZ50 of 40Mn2, 40Mn2Si; DZ55 the 40Mn2Mo, 40MnVB; DZ60 the 40MnMoB, DZ65 the 27MnMoVB. Steel is heat treatment to state delivery.
Oil cracking tube: for oil refinery furnace tubes, heat exchanger tubes and pipes used seamless pipe. Common quality carbon steel (10,20), steel (12CrMo, 15CrMo), heat-resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti) manufacturing. In addition to steel may permit the chemical composition and a variety of mechanical properties, but also ensure the water pressure, flattening, flaring and other tests, and surface quality, and nondestructive testing. Steel during heat treatment state of delivery. Stainless steel pipes: all kinds of stainless steel hot-rolled, cold-rolled stainless steel pipe, widely used in petroleum, chemical equipment, pipeline and various uses of stainless steel structural components, in addition to ensure the chemical composition and mechanical properties, where the pipes used for fluid pressure to bear hydraulic pressure test to ensure compliance. According to the provisions of all kinds of special steel to ensure the conditions.
Seamless Steel Tube Executive Standard
1, structure seamless pipe: GB8162-2008 2, transmission fluid spaces Steel Pipe: GB8163-20083, boiler seamless steel pipe: GB3087-2008 4, high-pressure seamless boiler: GB5310-2008 (ST45.8-ⅲ type) 5, fertilizers, equipment, high pressure seamless steel pipe: GB6479-1999 6, geological drilling seamless steel pipe: YB235-70 7, seamless steel pipe oil drilling: YB528-65 8, petroleum cracking with the seamless steel pipe: GB9948 - 889, oil drill collar special seamless: YB691-70 10, automobile axle seamless steel pipes: GB3088-1999 11, the ship with the seamless steel pipe: GB5312-1999 12, cold-drawn cold-rolled precision seamless steel tube: GB3639 -199,913, all kinds of alloy pipe 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo
In addition, there GB/T17396-1998 (hydraulic prop with the hot-rolled seamless steel tubes), GB3093-1986 (diesel engine with high-pressure seamless steel tubes), GB/T3639-1983 (cold drawn or cold rolled precision seamless steel tubes), GB / T3094-1986 (cold drawn seamless steel tube shaped steel tubing), GB/T8713-1988 (hydraulic and pneumatic cylinders precision diameter seamless steel tubes), GB13296-1991 (boiler, heat exchanger with stainless steel seamless pipe), GB/T14975 -1994 (structure stainless steel seamless pipe), GB/T14976-1994 (fluid transport stainless steel seamless pipe) GB/T5035-1993 (automobile axle casing seamless steel pipe), API SPEC5CT-1999 (casing and tubing specification) and so on.

Our company can according to customer demand processing carbon steel pipe, please contact us by phone.