Import Astm A199 Alloy Heat-Exchanger Tube — Buy in wholesale FOB from Supplier in China

The ASTM A199 seamless alloy heat-exchanger tube is designed for high-temperature service in boilers, superheaters, and heat-transfer equipment, manufactured by Zhangjiagang Vitten Industry Co.,Ltd in Jiangsu Province, China. The standard covers seamless ferritic alloy-steel tubes for these applications, with grades such as T11 (1.25% chromium, 0.5% molybdenum) and T22 (2.25% chromium, 1% molybdenum) being typical industry offerings that provide creep resistance and thermal fatigue performance. Wall thickness and outside diameter combinations must meet the dimensional tables of ASTM A199/A199M, with tolerances on OD and wall thickness critical for tube-bundle fit and heat-transfer coefficient consistency. The supplier's description emphasises seamless construction, which eliminates longitudinal weld seams and their associated stress concentration, a fundamental requirement for cyclic thermal service.

Alloy composition determines the tube's maximum allowable design temperature and oxidation resistance; T11 is typically rated for metal temperatures up to approximately 565 degrees Celsius, while T22 extends this to roughly 580 degrees Celsius, though exact limits depend on design stress values in ASME BPVC Section II-D. The seamless manufacturing process, rotary piercing or extrusion followed by cold finishing, ensures uniform grain structure and wall concentricity. Surface condition, internal cleanliness, and ovality control are essential for heat-exchanger assembly, where tube rolling into tube sheets requires consistent diameter and wall thickness to achieve proper joint strength. Zhangjiagang Vitten Industry Co.,Ltd offers these tubes to ASTM A199/A199M with compliance stated but buyers should verify the specific grade, heat treatment condition, and whether normalising and tempering or full annealing was applied.

End-use industries span fossil-fuel power plants, refinery process heaters, petrochemical cracking units, and gas-to-liquid heat recovery systems where thermal efficiency and tube reliability directly affect plant availability. Sourcing from Zhangjiagang, located near the Yangtze River and Shanghai-Nanjong economic corridor, offers logistics access to Shanghai port for international shipment. The listing mentions FOB and CIF as available Incoterms and indicates flexible minimum order quantities, though exact figures are not provided. Prospective buyers should confirm the specific alloy grade, heat treatment state, dimensional range in stock, third-party inspection options, and current production lead time with Zhangjiagang Vitten Industry Co.,Ltd before finalising technical and commercial terms.

Zhangjiagang Vitten Industry Co.,Ltd is headquartered at Unit 1, #206 New Orieng Plaza in Zhangjiagang City, Jiangsu Province, a region with established steel tube manufacturing infrastructure and proximity to the Yangtze River shipping corridor. The company holds a harbor trust tier on the platform, with a response rate of 0.00 and no recorded average response hours, indicating that prompt replies are not guaranteed and buyers should plan communication accordingly. No factory ownership model, production floor area, year of establishment, or quality system certificates are disclosed in the available data, so assertions about scale or seniority cannot be independently verified from this source.

The business focuses on ASTM A199 alloy heat-exchanger tubes for oil and gas, power generation, and chemical processing sectors, with emphasis on seamless construction and ASTM compliance. The listing mentions flexible MOQ and competitive positioning but does not attach specific order quantities, price bands, or sample policies. Importers should therefore treat initial contact as a technical qualification exercise: request material test certificates, enquire about in-process inspection capabilities, and ask for reference installations or end-user approvals before advancing to trial orders.