Shanghai ShengQiu Materials Co., Ltd

How to choose the appropriate hot-rolled seamless steel pipe and cold-drawn seamless steel pipe?   Selecting the appropriate seamless steel pipe —either hot-rolled (HR) or cold-drawn (CD) —is critical for industrial project success. These two main production methods yield pipes with distinct characteristics suited for specific applications.   1.Essential differences between hot-rolled and cold-drawn processes Hot-rolled seamless steel pipes are formed at high temperatures (typically above the recrystallization temperature) through processes such as piercing and rolling. Pipes produced by this process have the following characteristics: a wide range of sizes (outer diameter can reach hundreds of millimeters), high production efficiency, and relatively low cost, but they have a higher surface roughness and poorer dimensional accuracy. Cold-drawn seamless steel pipes are formed at room temperature by drawing through a die, often involving multiple passes and interm...

ASTM A335 Grade P22 Alloy Steel Seamless Pipe   O.D.: 10MM-720MM W.T.:1MM-120MM Length: Single Random, Double Random, 6-12meters   A335/SA335 Grade P22 Alloy Steel Seamless Pipes are Carbon steel pipes with addition of chromium, molybdenum, and sometimes vanadium. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Molybdenum increases the strength, elastic limit, resistance to wear, impact qualities and hardenability. It increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is also the most effective additive for increasing high temperature creep strength, or creep resistance, and it also enhances the corrosion resistance of steel and inhibits pitting. Grade P22 is used for high temperature service applications and is tolerant to variations in its microstructure.   P22 Pipe Chemical Requirements: •...

Cold Drawn Seamless Steel Pipe , Hot FinishedSeamless Steel Pipe , and Chrome Moly Tubing ShanghaiShengQiu Materials Co., Ltd  is an industry leading supplier of cold drawn seamless and hot finished seamless in carbon and alloy grades. The tightly controlled cold draw process produces tubing with outstanding dimensional accuracy, excellent micro-structure uniformity, and superior surface finish, making it the ideal choice for extreme stress, high pressure, and high temperature applications. Our chrome-moly products offer a very high strength-to-weight ratio, making it an excellent alternative for weight-sensitive applications.   We have the capacity to supply custom cut-to-length tubing within an O.D. range of 6mm to 1100mm a wall thickness range from 1mm to 100mm. Tubing can be supplied to meet a long list of ASTM, SAE, EN, DIN, JIS, and other international standards.   Offering enhanced machinability, tighter tolerances, and higher strength than hot finished p...

  The Main Application of Alloy Pipes Alloy pipes are mainly used to transport water, gas, natural gas, petroleum, and certain solid materials etc. Because the alloy pipe has a hollow section, it is widely used as a pipeline for conveying fluids and manufacture structural parts and mechanical parts, such as oil drill pipes, boiler pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. The alloy steel pipes can be used to manufacture ring-shaped parts and increase the utilization rate of materials, simplify the manufacturing process, save materials and reduce processing time, such as rolling bearing rings, jack sleeves, etc. Compared with solid steel such as round steel, the weight of alloy steel pipe is lighter when the bending and torsion strength is the same, so alloy steel pipe is a kind of economical cross-section steel. Shanghai ShengQiu can supply alloy pipes which are used for boiler and heat exchanger. Standard and Grade:  #E...

 High Pressure Boiler Pipe   OD: 6MM-1100MM WT: 1MM-100MM   Application : Used for the manufacture of high temperature and high pressure steam boilers, seamless steel pipes for pipelines, furnace tubes for petrochemical industry, seamless steel tubes for heat exchanger and pressure pipelines, seamless steel tubes for high pressure fertilizer equipment and pipelines, and seamless steel pipes for other chemical equipment.   Alloy pipe is a kind of seamless steel pipe. it is divided into structure alloy seamless pipes and high pressure heat-resistant alloy pipes. The main difference is the production standard and the industry's annealing and tempering to change its mechanical properties for achieving the required processing conditions. Its performance is higher than ordinary seamless steel pipes. The chemical composition of alloy pipes contains more Cr. It is resistant to high temperature, low temperature and corrosion. Ordinary carbon seamless pipes do no...

  Thick Wall Steel Pipe And Its Application   The steel pipe with outer diameter to wall thickness ratio is less than 20 is called thick-walled steel pipe. Mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes and high-precision structural pipes for automobiles, tractors, and aviation.   The biggest difference between thick wall steel pipe and thin wall steel pipe is the wall thickness. Generally speaking, thin wall steel pipes are cold drawn/rolled and thick-walled steel pipes are hot-rolled. If it is distinguished by measurement units, it is generally believed that thickness/ diameter equal to 0.02 is the demarcation point between thick wall steel pipes and thin wall steel pipes, thin wall steel pipes are less than 0.02 and thick wall steel pipes are more than 0.02. In terms of usage, thin-walled steel pipes are mostly used for pipelines and thick wall steel pipes are mostly used in blanks of h...

 ASTM A213/ASME SA333/ASME SA334 Shanghai ShengQiu Materials Co., Ltd supplies small size seamless steel pipe with competitive price: Standard and Grade: ASTM A213, Grade T11/T22/T5/T9/T91/210C/20G/15CrMoG/12Cr2MoG/12Cr5MoG/12Cr9MoG ASME SA333/SA333M, ASME SA334/SA334M, Grade 16MnD/09MnD/09MnNiD/3.5Ni O.D.:19MM--89MM W.T.: 2MM--10MM Length: 3--22METERS Send us inquiry for good price! Website: www.sqsteelpipe.com Email: sales@sqsteelpipe.com Skype: steelproducts WhatsApp: 008613761124029