Import Astm A778 Welded Pipe Price With Free Sample — Buy in wholesale FOB from Supplier in China

The ASTM A778 welded pipe from Foshan Kuanyu Stainless Steel Co., Ltd. is an austenitic stainless steel tube manufactured to ASTM A778 specification for corrosive service and structural applications. Grades TP304/304L and TP316/316L are stocked, with the 316L variant offering enhanced molybdenum content for chloride-rich environments. The supplier provides free samples for quality verification prior to bulk commitment, a useful signal for importers assessing weld integrity and surface finish. Dimensions span multiple schedules and nominal pipe sizes, though exact millimetre ranges should be confirmed directly with the supplier for project-specific matching.

Material composition follows standard austenitic chemistry: 304L contains 18-20% chromium and 8-12% nickel with maximum 0.03% carbon, while 316L adds 2-3% molybdenum for pitting resistance. Weld seams are produced by automatic TIG or plasma-arc processes, followed by cold working and solution annealing to restore corrosion resistance in the heat-affected zone. Typical wall thickness tolerance is +/- 12.5% under ASTM A778, though the supplier's own mill certificate should be requested to verify conformance. Surface finish is typically pickled and passivated, or bright annealed depending on grade and end use. The pipe withstands temperatures from cryogenic levels to approximately 870 degrees celsius in intermittent service for 304L, with 316L suited to marine and chemical exposure.

Primary buyers include chemical process plants, offshore platform fabricators, food and beverage equipment manufacturers, and architectural metalwork contractors. Applications cover process piping, heat exchanger tubing, structural handrail systems, and exhaust manifolds where oxidation resistance is critical. For import trade, the supplier quotes FOB and CIF terms, with L/C and T/T payment methods accepted. MOQ flexibility is mentioned but not quantified in the source data, so confirm minimum tonnage or piece count when requesting quotation. ISO and SGS certification claims are stated; buyers should obtain current certificate copies and verify accreditation body validity before order placement.

Foshan Kuanyu Stainless Steel Co., Ltd. operates from Block E1, Liyuan Metal Logistics Mall in Foshan, Guangdong Province, China, a region with deep concentration in stainless steel processing and distribution. The supplier holds a harbour trust tier on the platform, though response rate and average response hours both register at zero in the available data, suggesting limited transactional history or unmonitored communication channels. No verified trade assurance, on-site inspection, or third-party audit details are present in the profile. The company markets itself through ASTM A778 welded pipe with grade flexibility and sample provision, positioning toward export-oriented buyers.

The listing does not disclose year of establishment, registered capital, production floor area, employee count, or annual turnover. No named clients, project references, or case studies are provided. Buyers should conduct independent due diligence, request business licence verification, and preferably arrange factory inspection or third-party audit before committing to substantial orders. The free sample offer is a positive engagement signal, but importers should clarify whether sample freight is prepaid or collect, and whether sample dimensions represent production capability or are specially prepared specimens.