Seamless carbon steel pipes are made of steel ingots or solid billets through perforation to make capillaries, which are then hot-rolled, cold-rolled or cold-drawn. The raw material of carbon Steel Pipe is a round tube blank, which is cut by a cutting machine into a billet with a length of about 1 meter, and sent to a furnace for heating through a conveyor belt. The billets are fed into the furnace and heated at about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a critical issue. After the round tube blank is released from the furnace, it is pierced through a pressure punching machine. Generally, the more common punching machine is the conical roller punching machine. This kind of punching machine has high production efficiency, good product quality, large amount of perforation and diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively cross-rolled, continuously rolled or extruded by three rolls.
Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow - liquids and gases (fluids), slurries, powders and masses of small solids.
Hot rolled seamless steel pipe deformation process can be summarized as three stages: extension, perforation and finishing. Hot rolled seamless steel pipes is relative to the cold-rolled, cold rolling is below the recrystallization temperature of the rolling and hot rolled is carried out at above the recrystallization temperature of the rolling. Hot rolled seamless steel pipe can damage the refinement of the crystal grains of the steel, cast microstructure of the steel ingot and eliminate the defects of the microstructure so that the the steel organization compacting, improves the mechanical properties. This improvement is reflected in the rolling direction so that the steel is no longer at a certain extent isotropic; pouring the formation of bubbles, cracks and osteoporosis, under high pressure and temperature can also be welded together.
Hot Rolled Steel Pipes (Seamless Tube) in different size, specifications, grades & thickness as per the client's requirements. The range offered by tubes is available as per the international & national standard and can be available from us at affordable prices. These pipes are used in various application industry like shipbuilding, power plants, oil and gas, automotive, sugar mills and distilleries, cement and construction industries etc.
Carbon Steel Pipes,Mlid Steel Pipe,Seamless Steel Pipe SHANDONG HUITONG STEEL CO.,LTD , https://www.cnmetalsupply.com
August 25th Steel Market Price Quotes
Name Specification Material Steel / Origin Price (RMB / ton) than yesterday last week last month general line Φ6.5 / 8mm Q235 Hansteel 48500-200-500 high line Φ6.5 / 8mm Q235 Hansteel 50500-- 150 -450 High Line Φ6.5/8mm Q235 New Gold 5050 0 -150 -450 High Line Φ6.5mm Q235 Licheng Taihang 5230 0 0 -390 Rebar Φ12mm HRB335 Handan Steel 5250 0 -200 -410 Rebar Φ12mm HRB335 Emerging Cast pipe 5250 0 -200 -410 Rebar Φ16-25mm HRB335 Handan steel 5050 0 -200 -410 Rebar Φ16-25mm HRB335 Emerging cast pipe 5050 0 -200 -410 Rebar Φ16-28mm HRB335 Licheng Taixing 5520 0 0 - 150 spiro Φ10mm HRB400 licheng row 558000-270 too hot rolled coils 1.8 * 1250 * C Q235 Hansteel 5800-100-330 -730 hot rolled coil was 2.0 * 1500 * C Q235 Hansteel 5600-130-310-- 760 Hot rolled coil 2.5*1500*C Q235 Handan 5430 -150 -400 -790 Hot rolled coil 2.75*1500*C Q235 Handan Steel 5400 -150 -400 -750 Hot rolled coil 3.0*1500*C Q235 邯Steel 5300 -100 -360 -600 Hot Rolled Plates 4.0-4.75*1500*C Q235 Handan Steel 5000 -100 -320 -900 Hot Rolled Plates 5.0-6.0*1500*C Q235 Handan Steel 5000 -100 -320 -900 Hot Rolled Plate 7.2-9.8*1500*C Q235 Handan Steel 5000 -100 -320 -900 Hot Rolled Plate 4.5-10.0*1500*C Q235 Tiantie 4990 -100 -430 -910 Puzhong Plate 8.0mm Q235 Sky Steel, Handan Steel 6290 -120 -470 -700 Puzhong Plate 10.0mm Q235 Sky Steel, Handan Iron and Steel 6090 -120 -470 -700 Puzhong Plate 12.0mm Q235 Handan Steel 5760 -120 -470 -700 Puzhong Board 14-25mm Q235 Handan Steel 5680 -120 -470 -700 Puzhong Board 14-25mm Q235 Wenfeng 5580 -120 -420-700 P plate 14-25mm Q235 Pu-5620-160-480 -740 P plate 14-25mm Q235 Yuanbaoshan 5530-120-320 -620 8mm Q345 low-alloy plate HANGANG 5340-1120-1470 -1700 Angle Steel 50*5/6m Q235 Steel 5400 0 -100 -200 Angle Steel 63*6 Q235 Ansteel 5450 0 -50 -150 Angle Steel 9# Q235 Ansteel 5400 0 -100 -200 Channel Steel 8# Q235 Ansteel 5400 0 - 100 -200 channel steel 12# Q235 steel 5600 0 0 0 channel steel 20#/8m Q235 Jiangtian 5650 0 0 0 I-beam 12# Q235 Haicheng 5600 0 0 100 I-beam 25b# Q235 Laiwu Steel 5650 0 0 - 130 I-beam 32# Q235 Laiwu Steel 5750 0 -80 -130 Hot-rolled Strip 3.5mm and above *735*C Q235 Vertical and horizontal 5150 0 -100 -450 Hot-rolled strip 5.5mm*685*C Q235 Vertical and horizontal 5150 0 -100 -450 Hot Rolled Strip 3.0mm*(685-735)*C Q195 Vertical and Horizontal 5200 0 -100 -450 Hot Rolled Strip 3.5mm*(480-570) )*C Q195 Wenfeng 5200 0 -100 -450 Hot rolled strip 3.75mm*520*C Q235 Wenfeng 5150 0 -100 -450 Hot rolled strip 3.0mm*(480-570)*C Q235 Wenfeng 5150 0 -100 -450