American Piping, geniş bir kaynaklı boru yelpazesi dağıtır, Elektrik Direnci Kaynaklı dahil (ERW) ve Çift Tozaltı Ark Kaynaklı (DSAW) karbon çelik boru - ilgili flanşları ve bağlantı parçaları ile birlikte. Ayrıca A139 - B Sınıfı da taşıyoruz, A252 Sınıfları 2 & 3 spiral kaynak borusu, ve A691 krom moly boru.
Welded pipes are used especially for pipeline constructions and for larger dimensions in the process plants; herhangi şartnameler ve nitelikleri bizim tedarik programın parçası olan.
Örneğin , Biz göre dünyada boru hattı projeleri için karbon çelik boru tedarik:
API 5L X 52, X60, X65, X70
ACC kaynaklı karbon ve alaşımlı işlem tesisi borular. Aşağıdaki standartlara:
ASTM A333, 671, 672, 691
Kaynaklı Paslanmaz çelik, kimyasal ve petrokimya tesisleri için özel alaşımlar borular:
ASTM A 312, 358, 778, 928, ASTM B 619, B725
Tüm malzemeler de acc mevcuttur. eşdeğer DIN / EN standartları ve kaliteleri.
Welded pipe manufacturing
At the start of the welded pipe manufacturing process so called slabs or billets are cast in a steel mill. Dependent on the external dimensions and wall thickness there are different methods of producing welded pipes and tubes: Elektrik Direnç Kaynağı (ERW), Fusion Welding (EFW) and Double Submerged Arc Welding (DSAW). In the ERW and EFW manufacturing process welded pipes are formed by hot or cold rolling plate and welding the seam. In order to keep the outside (O. D.) surface of a welded pipe smooth and uniform a cutting tool called scarfing blade is used to remove the weld flash. Scarfing from the inside (I.D.) welded flash is also possible. With a heat treating at the end of the manufacturing process the weld zone of the steel pipe can be made less visible. Due to the weld seam lower operating pressures are stated in accordance with ASME compared to seamless pipes. In general welded tubes possess tighter dimensional tolerances than seamless pipes and are less costly if produced in same quantities.
SSAW steel pipe(Spiral Submerged- Arc Welded Steel Pipe) is also known as the SAWH Steel pipe(Submerged-arc Welded Helical pipe)
Boyuna Tozaltı Kaynaklı Çelik Boru
İşlem: LSAW – UO(Evlenmek), RB(RBE), JCO(JCOE, MÖ); DSAW – Çift Tozaltı Kaynaklı
kullanım: Alçak basınçlı sıvı teslimi için kullanılan, su gibi, Gaz, ve petrol.
Standart: API 5L, API 5CT, ASTM 53, EN10217, DİN 2458. IS 3589, GB/T3091, GB/T9711
sertifika: API 5L PSL1 / PSL2, API 5CT
Dış Çap: 323.9mm -1820 mm(12”-72”)
Electric Resistance Welded Steel Pipe:The manufacturing starts by cold-forming a coiled plate of steel with eligible thickness and certain width into a cylindrical shape. As the cylindrical plates come together, an electric current using heat merges the edges together to create the final product.
kullanım:Alçak basınçlı sıvı teslimi için kullanılan, su gibi, Gaz, ve petrol. Oil drilling and machinery manufacturing, vb.
ERW: Elektrik direnç dikişli boru
HFI: High Frequency Induction weld pipe
EFW: Electric Fusion Welded Pipe:Processing of Electric Fusion Welding, also called Continuous Welding begins as coiled steel with appropriate thickness, width and weight is made. To form a continuous ribbon of steel several coils are welded together.
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