The production of seamless steel pipes can be divided into welded and seamless pipes according to different processing techniques. Welded pipes are processed from plate and strip raw materials. Seamless pipes are made from steel castings or solid pipes that are drilled and then cold-rolled and cold-rolled.
The production of
seamless steel pipes can be divided into welded and seamless pipes according to different processing techniques. Welded pipes are processed from plate and strip raw materials. Seamless pipes are made from steel castings or solid pipes that are drilled and then cold-rolled and cold-rolled. Pulling, pipe jacking construction or extrusion molding. In comparison, the production process of seamless pipes is more difficult and costly, but since there is no pipe welding, seamless pipes can withstand pressure better than welded pipes.
According to different compositions, seamless steel pipes can be divided into carbon steel pipes, alloy pipes (including stainless steel pipes), etc. Among them, in addition to Fe and C elements, carbon steel pipes also contain a small amount of Si, Mn, Al, etc. from recycled waste. In order to improve the special physical or chemical properties of alloy pipes, additional alloy components such as Cr, Ni, Mo, Ti, and V are added. According to relevant data, my country's seamless steel pipe production share remains above 50%, making it the world's largest seamless steel pipe producer.
Seamless steel pipe application areas:
As a high-quality pipe, seamless steel pipe is an important raw material widely used in construction, manufacturing, chemical industry, petroleum and other fields. It has high strength, corrosion resistance, high temperature resistance and other characteristics, and can meet the needs of use in various complex environments. .
Seamless steel pipes can be divided into the following categories according to their uses:
1. Structural seamless steel pipes: mainly used in the production of structural parts such as buildings, bridges, vehicles, and ships.
2. Seamless steel pipes for fluid transportation: mainly used for transportation of oil, natural gas, water, steam and other fluids.
3. Seamless steel pipes for high-pressure boilers: mainly used in the production of high-temperature and high-pressure boilers.
Our company specializes in the production and sales of precision seamless steel pipes used in boilers, petrochemicals, automobiles, ships, engineering machinery and other special industries. We have established raw material supply cooperation relationships with many large domestic steel mills, and our products are sold to major boilers at home and abroad. Manufacturing, shipbuilding, petrochemical, automobile manufacturing, engineering machinery and other well-known enterprises.
Hebei Shengtian (steel pipe for boiler industry) product introduction:
Product specifications: outer diameter: Φ16~Φ76mm; wall thickness: 2~10mm.
Product usage: Mainly used in manufacturing boiler membrane walls, water-cooled walls, economizers, headers, heat exchangers, etc.
Main grades: 10, 20, 20G, 09CrCuSb, 12CrMoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, T5/P5, T11/P11, T12/P12, T22/P22, T91/P91, SA210A1, SA210C, etc.
Implementation standards: GB/T 3087-2022, GB/T 5310-2023, GB/T 9948-2013, GB/T 150.2-2011, ASME SA106, ASME SA179, ASME SA192, ASME SA210, ASME SA213, ASME SA335, etc.
Hebei Shengtian (steel pipe for petrochemical industry) product introduction:
Product specifications: outer diameter: Φ16~Φ76mm; wall thickness: 2~10mm.
Product use: Mainly used for mining, transportation and equipment manufacturing in petroleum, natural gas, chemical and other industries.
Main grades: 10, 20, 15CrMo, 12Cr2Mo, 35CrMoA, L245N, L290N/X42X, L320N/X46X, L360N/X52N, J55, K55, N80-1.
Implementation standards: GB/T 8163-2018, GB/T 9948-2013, GB 6479-2013,
GB/T 19830-2011, GB/T 9711-2017, API SPEC 5CT, API SPEC 5L, ISO 11960.
Hebei Shengtian (Special Steel Pipe for Shipping Industry) Product Introduction:
Product specifications: outer diameter: Φ16~Φ76mm; wall thickness: 2~10mm.
Product use: used in the manufacture of seamless steel pipes for marine boilers and superheaters and grade I and II pressure piping systems.
Main brands: 320Ⅰ, 320Ⅱ, 320G, 360Ⅰ, 360Ⅱ, 360G, 410Ⅰ, 410Ⅱ, 410G.
Implementation standards: GB/T 5312-2009, CCS, ABS, BV, DNV, NK, LR, KR, RINA, RS specifications.
Product introduction of Hebei Shengtian (special steel pipe for automobile and construction machinery industry):
Product specifications: outer diameter: Φ16~Φ76mm; wall thickness: 2~10mm.
Product use: Mainly used for automobile manipulators, shock absorbers, transmission shafts, automobile accessories, construction machinery structures, hydraulic pressure, transmission rolling and spare parts processing.
Main grades: 10, 20, 35, 45, Q355B, 20Cr, 40Cr, 42Cr, 25Mn, 15CrMo, 30CrMo, 35CrMo, 42CrMo, SAE8617H.
Implementation standards: GB/T 8162-2018, GB/T 8163-2018, GB/T 3639-2021, ASME SA519.
