Carbon steel pipe is a spiral seam steel pipe with a steel coiled plate as a raw material, which is often extruded and formed by welding with an automatic double-wire submerged arc welding process. The spiral steel pipe feeds the strip steel into the welded pipe unit, and after being rolled by multiple rollers, the strip steel is gradually rolled up to form a round tube blank with an open gap. 3mm, and make the two ends of the welding port flush.
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Product Name
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Carbon Steel Pipe Tube
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Standard
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API5L, ASTM A106 Gr.B, ASTM A53 Gr.B, ASTM A270, ASTM A249, ASTM A511,ASTM A778 ,ASTM A312,ASTM A358,ASTM A409,ASTM A213,ASTM A790,ASTM A268,ASTM A269,ASTM A554,ASTM B338,ASTM B673,ASTM B674,ASTM B677,ASTM B675, ASTM B676, ASTM B690,ASTM A928,ASMEB36.19,ASMEB36.10,ASTMA179/A192/A213/A210/370WP91,WP1,WP2
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GB5310-2009,GB3087-2008,GB6479-2013,GB9948-2013,GB/T8163-2008, GB8162-2008,GB/T17396-2009
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EN10216-5,EN10217-7,DIN 17456,DIN 17458
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JIS G3463,JIS G3119,JIS G3446,JIS G3218,JIS G3258,JIS G3448,JIS H4631
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DEP 31,DEP 40,DEP 20,DEP 32,DNV-OS-F101
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Grade
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Q195 = S195 / A53 Grade A
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Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 /ST42.2
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Q345 = S355JR / A500 Grade B Grade C
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Length
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5.8~12.0 m or as customized
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Surface Treatment
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Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment)
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Inspection
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With Chemical Composition and Mechanical Properties Analysis;
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Dimensional and Visual Inspection, also with Nondestructive Inspection.
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Application
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Structure, Electric power transmission tower projects, Piling, Water, Oil & gas pipeline engineering, Mechanical industry,
Municipal projects, Roads and its auxiliary facilities, etc. |
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Carbon steel pipe is a spiral seam steel pipe with a steel coiled plate as a raw material, which is often extruded and formed by welding with an automatic double-wire submerged arc welding process. The spiral steel pipe feeds the strip steel into the welded pipe unit, and after being rolled by multiple rollers, the strip steel is gradually rolled up to form a round tube blank with an open gap. 3mm, and make the two ends of the welding port flush.
Carbon Seamless steel tube with hollow section, a large number of pipeline used for conveying fluid, such as oil, natural gas, gas, water and some solid materials pipeline. It is widely used in the manufacture of structural and mechanical parts, such as oil drill pipe, automobile transmission shaft,bicycle frame and steel scaffolding used in construction.
SMLS/Welded Stainless Steel Pipes or stainless steel tubes
We supply every kind of stainless steel pipes which are widely used at different fields.
Pipes can be by seamless(Hot rolled/Cold rolled) or welded (ERW).
Common application for stainless tubes is for fluid pipe, construction pipe, decoration/ornamental pipe
and special mechanical purpose.
Pipe size: small diameter from 3mm to 18mm, normal size from 21mm to 219mm, big size pipe from 273mm to 406mm, even bigger.
Wall thickness: Sch5s to Sch160s
Delivery state: annealing bright, pickling, mirror surface, etc.
The raw material of the carbon steel pipe is a round tube blank, and the round tube embryo is cut by the cutting machine and the growth of the blank is about 1 meter, and is sent to the furnace by the conveyor belt for heating. The billets are heated in a furnace at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. After the round tube billet is released, it must be perforated by the pressure piercing machine. Generally, the most common piercing machine is the conical roll piercing machine, which has high production efficiency, good product quality, large perforating and expanding diameter, and can wear a variety of steel. After the perforation, the round tube blank is successively rolled by three roller skew, continuous rolling or extrusion. After extrusion, the tube should be removed for sizing. The sizing machine rotates into the steel embryo at high speed through the conical drill to punch holes and form the steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the caliper drill bit. After the steel pipe is calibrated, it enters the cooling tower and is cooled by water spray. After the steel pipe is cooled, it will be straightened. After the steel pipe is straightened, it is sent to the metal inspection machine (or hydraulic test) for internal inspection. If there are cracks, bubbles and other problems inside the steel pipe, it will be detected. After the steel pipe inspection, it is also strictly selected by hand. After the steel pipe quality inspection, paint the number, specification, production batch number, etc. And hoisted by crane into the warehouse.
