Shanghai ShengQiu Materials Co., Ltd

Square/RectangularWelding Fin Tube (“H”/”HH” Type)   Square or Rectangular fins are welded onto ONE steel base tube. We call it 'H' fin Tube. Square or Rectangular H Fins are welded onto TWO steel base tube. We call it 'HH' or 'DOUBLE H' Fin Tube.   The Square or Rectangular H/HH Finned Tube quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner tubes and outer fins.   Square/Rectangular Welding Fin Tubes are used in economizers, boilers, marine boilers etc… Operation temperature: 550 ℃ max. Tube materials: carbon steel, stainless steel, Alloy steel can be applied. Fin material: carbon steel, stainless steel   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com  

High FrequencyWelding Fin Tube (“HFW” Type)   The fin strip is welded continuously and spirally wound onto a polished plain tube. And the tube and fins are bonded together by using high frequency resistance welding technique. This manufacturing method ensures high heat transfer coefficient and a perfect contact between plain tube and fins.   The welded fins could be solid and serrated. And also, all helical welded tubes could be BENT in the middle or at both ends; we call it 'Hairpin' tubes.   Welded finned tubes are used in fired heater, economizers, boilers, pre-heaters etc… Operation temperature: 550 ℃ max. Tube materials: carbon steel, stainless steel, alloy steel can be applied. Fin material: carbon steel, stainless steel   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com

 Some seamless carbon steel pipes will be shipped to the customer this weekend. Welcome send us inquiry for quotation at any time. Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com

Seamless Casing Pipe Standard and Grade: API5CT N80 Quantity: 4 x 40' container All these casing pipes will be shipped to the customer this week. Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email:  sales@sqsteelpipe.com Website:  www.sqsteelpipe.com

Alloy Steel Pipes ASTM A333 ASTM A335, P5/P9/P11/P22/P91 DIN17175, ST35.8/ST45.8 EN10216-2, P235GH/P265GH DIN2391, ST52 ASTM A519, SAE4130/SAE4140 ASTM A213, T2/T5/T9/T11/T12/T22/T23/T24/T36/T9 Welcome send us inquiry for quotation at any time! Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email:  sales@sqsteelpipe.com Website:  www.sqsteelpipe.com

KLFin/Knurled Footed Fin Tubes (“KL” Type)   The 'KL' fin Tube is developed from the L fin tube. The root of fins is knurled simultaneously with inner tube, thus ensuring the tight contact between fins and plain tube. The KL fin tubes are preferred when used in slightly more aggressive conditions for increased higher temperatrure and enchaned the corrosion protection to the outside wall of the tube.   Operation temperature: 250 ℃ max. Tube materials: carbon steel, stainless steel, copper or any metal can be applied. Fin material: Aluminum, copper and carbon steel.   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com

LLFin/Overlapped Footed Fin Tubes (“LL” or “DL” Type)   The fin strip is folded into a DOUBLE L shape, and wound onto the base tube surface under tension, the feet of the fins are joined together and cover the finned surface. This LL fin shape is much more efficiently protected by con.   Operation temperature: 175 ℃ max. Tube materials: carbon steel, stainless steel, copper or any metal can be applied. Fin material: Aluminum, copper and carbon steel.   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com

L Fin/ Tension WoundFin Tubes (“L” Type)   The fin material is folded to form a 'L' shape and then tension wound around the base tube. The feet of the fins are joined together and cover the whole of the finned surface.   Operation temperature: 150 ℃ max. Tube materials: carbon steel, stainless steel, copper or any metal can be applied. Fin material: Aluminum, copper and carbon steel.   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com

Extruded BimetalFinned Tubes (“DR” Type)   A clean plain tube is inserted into an aluminum sleeve. The fins are extruded from this sleeve around the tube. In this process, the inside diameter of the sleeve is reduced and the sleeve is pressed onto the core plain tube. This process produces a strong bond contact with excellent heat transfer coefficient. The extruded fins could be solid and serrated. Aluminum finned tubes are used in steam air heater, condensers, air fin coolers etc… Operation temperature: 300 ℃ (Max) Tube materials: carbon steel, stainless steel, copper or any metal can be applied. Fin material: Aluminum (Grade 1100/1060/6063 etc)   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com  

G Base/EmbeddedFooted Fin Tubes (“G” Type)   G base fluted fin tubes are provided with high, helical fins and offer special good heat transfer characteristics. The special manufacturing process which consists in placing the fin in a pre-shaped groove with a defined pitch and rolling it securely at high contact pressure, ensure a perfect and permanent bond between plain tubes and fins.   Advantage of the G-fin ： Excellent heat transfer Permanent bond between the tube and fin, as the fin is firmly rolled into the grooved core tube (fin :aluminum or carbon steel) High thermal and mechanical resistance Application range: :up to 400 ℃ with aluminum fins   Welcome send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 08613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com  

Heavy Wall Seamless Steel Pipes Standard and Grade: DIN2391 ST52 Size: 127MM x 12MM x 5710MM All these steel pipes will be shipped the day after tomorrow. Should anyone needs heavy wall seamless steel pipes, don't hesitate to send us inquiry for quotation at any time.   Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com  

Shanghai ShengQiu Materials Co., Ltd can supply Finned Tube s: DR(Extruded)/L(Wrapped)/LL(Overlapped)/KL(Knurled)/G(Embedded)Fin Tube, High Frequency welding Fin Tube, Studded Tube, H/HH(Square) Fin Tube, Longitudinal Fin Tube, Low Fin Tube.   Application: used for air cooler, fired heater, heat exchanger, marine boiler, economizer, power plant boiler, HRSG boiler, waste heat recovery unit, air heater etc.   Our end user are mainly from Power Plant, Refinery & Petrochemical, Offshore & Marine.   Welcome send us inquiry for quotation at any time. Shanghai ShengQiu Materials Co., Ltd WhatsApp: 008613761124029 Email: sales@sqsteelpipe.com Website: www.sqsteelpipe.com