Stainless Steel U Tubes – Precision-Bent for Heat Exchange Efficiency and Long-Term Durability

Stainless Steel U Tubes – Precision-Bent for Heat Exchange Efficiency and Long-Term Durability

Product Description
Our stainless steel U tubes are specially designed for heat exchanger and boiler systems, where efficient heat transfer and high corrosion resistance are essential. Using high-quality stainless steel and precision U-bending technology, these tubes maintain structural integrity and performance in extreme temperature and pressure conditions.

Material Grades

• 304 / 304L – Ideal for general-purpose applications with good corrosion resistance

• 316 / 316L – Enhanced resistance to chlorides and chemicals, perfect for marine and chemical environments

• 321 / 347 / 310S – Suitable for high-temperature applications

• Duplex & Super Duplex (2205 / 2507) – Excellent strength and stress corrosion cracking resistance

• Nickel Alloys (Inconel, Hastelloy, Monel) – Available for critical applications requiring extreme corrosion resistance

Specifications

• Tube Outer Diameter: 6mm – 38mm (1/4” – 1.5”)

• Wall Thickness: 0.5mm – 3.0mm

• U Bend Radius: 1.5D, 2D, 3D or customized

• Leg Length: Up to 20 meters

• Bend Angle: 180° standard or customized

• Standards: ASTM A213 / A269 / A688, EN10216-5, JIS, GB

• End Finish: Plain, beveled, or threaded; hydro-tested and cleaned

Applications

• Heat Exchangers

• Condensers and Boilers

• Power Plants and Nuclear Facilities

• Petrochemical and Chemical Processing

• Air Conditioning and Refrigeration

• Desalination Plants and Marine Systems

Key Features

• Precise U-bending with smooth bend radius and no thinning or wrinkling

• Excellent corrosion resistance under high pressure and temperature

• Uniform wall thickness, clean inner surface, and tight dimensional tolerance

• 100% hydrostatic or eddy current testing available

• Can be supplied in annealed, pickled, or polished condition

Advantages
✅ Efficient Heat Transfer – Maximizes performance in thermal systems
✅ Customizable Design – Tailored bending radius, length, and surface finish to meet your project needs
✅ Reliable Quality Control – Strict dimensional inspection and non-destructive testing
✅ Long Service Life – Withstands thermal expansion, vibration, and corrosive media
✅ Global Export Expertise – Fast delivery, multilingual support, and professional packaging

Quality Management Department is establshed in the enterprise, which is responsible for the implementation of quallty management acrossall sectors, including QC, QA and implement and supervise various management system. The company reviews the Quality Manual byconducting management reviews annually to confirm its conformance, effectiveness and suitability.

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Project Achievement

HENGLI Petrochemical 40 million / year ton of oil refining integration project	ZHEJIANG Petrochemical 40 million / year ton of oil refining integration project	LIANYUNGANG Petrochemical 3.2 million tons / young hydrocarbon comprehensive	YISHENG New Material The 6.6 million tons / year of the PTA project	CNOOC Huizhou Refining & Chemical Co Huilian Phase II, 22 million / year ton of oil refining Reconstruction and expansion project	Sinopec Zhenhai Refining & Chemical Company 1.2 million / year ton ethylene renovation and expansion project	Wanhua Chemical 480,000 tons / year bisphenol A integration project	GUANGXI Huayi New Materials Integration project of new chemical materials	CNOOC Shell The SMPO & POD project	China AtlantoShaanxi Coal Chemical Industry: 1.8 million tons / year ethylene glycol project
Hainan Huasheng 2.26 million tons / year non-photogamic polycarbonate project	Shenghong Refining The 16 million tons / year oil refining project	Anhui Haoyuan Chemical Industry 300,000 tons / year ethylene glycol project	Heilongjiang Longyou Petrochemical Company5.5 million tons / year heavy oil catalytic pyrolysis project	HuaLu Hengsheng 500,000 tons / year ethylene glycol project	Baofeng Energy600,000 tons / year methanol to olefin project	Jiangnan Shipyard (98000m³ liquefied ethane ship, etc.) Brand number: 316 / 316L, delivery time: 2020.12	Keppel shipyard in Singapore (FLNG ship) Brand number: 316 / 316L, delivery time: 2020.1	Guangzhou Wenchong Shipyard (Super double-phase steel desulfurization tower) Brand number: S32750 Delivery time: 2021.3	CSSC Dalian (FPSO, MV31, etc.) Brand number: 316L, etc., delivery date, 2019.8
725 Institute of China Shipbuilding Industry (Cu-Ni alloy Tube)	Nantong COCSO Shipyard (FSRU ship module)	CIMC Raffles (Drilling Rig)	CNOOC Orient 13-2 (Lined pipe)	CNOOC Bozhong 19-6 (Lined Pipe)	Petrobras MODEC FPSO (COSCO Shipping)	CNOOC Guangxi LNG, storage and transportation storage Brand number: 304 / 304L Specification: (8 "~32")×(3.76~9.53mm)	CNOOC Zhejiang LNG Phase II Brand number: 304 / 304L Specification: (6 "~28")×(7.11~10.31mm)	Sinopec Shandong LNG Phase II Brand number: 304 / 304L Specification: DN250 SCH10S	LIANYUNGANG Petrochemical A 4X160000m³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 813X12.7MM Delivery time: 2020.9
Sinopec Luoyang Institute Wenzhou LNG terminal Brand number: 304 / 304L Specification: 219.1~711X12.7MM Delivery time: 2022.3	Huatai Shengfu 160,000 m ³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 219~508X9.53MM	YAMAL LNG Brand number: 304 / 304L Specification: 406~914X9.53MM	Beijing Maiden Voyage	Oriental Hope	Sichuan Yongxiang 70,000 tons / year high purity polysilicon project	Xinjiang Daquan 25,000 tons / year high purity polysilicon project	Eagle Central China Paper Industry 500,000 tons of box board project	Guangxi Sun Paper 3.5 million tons of forest pulp and paper integration project	APP for Asian pulp and paper Chemical machine pulp and sewage treatment project
TCL Shenzhen Huaxing Optoelectronics semiconductor clean pipeline project	Beijing Daxing Airport	Hong Kong-Zhuhai-Macau/Macao Bridge Tubes used for stainless steel construction	CNNC Xiapu nuclear Power Plant Fast reactor demonstration project of CNNC 2.3	CONBA Stainless steel pipe for pharmaceutical engineering	Shenghong Refining Stainless steel associated heat pipe	Hangzhou Sewage Treatment Plant Stainless steel pipe for backwash purification unit	Qilu Pharmaceutical Fluid stainless steel pipe for raw material delivery	Zijin Mining Wet copper smelting, stainless steel sewage pipe	ect
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Certificate

API-5LD AUTHENTICATION	American Petroleum Institute API 5LC Certificate	ASME Certificate in the United States	EU PED&AD2000 certificate	ABS classification society certification certificate in the United States	DNV Det Norske Veritas Certificate	RINA Italian Bureau of Shipping Certificate	BV French Bureau of Shipping certification	LR Lloyd's Register Certificate of Approval	Customs Union EAC Certificate	Russian GOST certificate

Raw Material Vendors	Cooperation Partners

Stainless Steel U Tubes – Precision-Bent for Heat Exchange Efficiency and Long-Term Durability Images