Import Alloy Steel Galvanized A193 B7 Threaded Rods — Buy in wholesale FOB from Supplier in China

Ningbo Topbolt Metalworks Co., Ltd. supplies alloy steel galvanized A193 B7 threaded rods in sizes ranging from M3 to M64, with lengths from M6 to M1000, all manufactured to ISO, JIS, GB, ANSI or DIN standards. The material is alloy steel with yellow zinc plating (Zn-plated) as the surface treatment, with hardness achieved through tempering, hardening or stress relieving processes. Grades available include 4.8, 6.8, 8.8, 10.9, 12.9, A2-70 and A4-80, allowing selection across structural, corrosion-resistant and high-tensile applications. The A193 B7 specification designates a chromium-molybdenum alloy steel quenched and tempered to achieve 125 ksi minimum tensile strength, suitable for high-pressure and high-temperature service.

The rods accept custom non-standard dimensions and designs when accompanied by drawings or samples, extending beyond the standard metric thread forms. Surface options beyond yellow zinc include nickel plating, passivation, tin plating, sandblast and anodize, polish, electro painting, black anodize, plain finish, chrome plating and hot-dip galvanizing (H.D.G.). Heat treatment protocols of spheroidizing and stress relieving are available for specialized mechanical requirements. Alternative materials of stainless steel, carbon steel, brass, titanium and aluminum alloy can be substituted for the base alloy steel when the application demands.

These threaded rods serve petrochemical, power generation, heavy construction and marine industries where ASTM A193 B7 compliance is specified for bolting flanges, pressure vessels and structural steel connections. Buyers include EPC contractors, valve manufacturers, offshore platform fabricators and wind turbine assembly operations. The supplier requires 30% payment in advance with 70oxid=570095 balance before shipment, with samples payable 100% in advance. Standard packing is bulk in cartons of 25 kg maximum on wooden pallets, with special demand configurations accommodated on request.

Ningbo Topbolt Metalworks Co., Ltd. operates from the Jiulong Lake Industrial Zone in Zhenhai, Ningbo, Zhejiang Province, China, postal code 315100. The company's trust tier is classified as harbor, with a recorded response rate of 0.00% and average response time of 0 hours, indicating no response data is currently available through the platform. No verification of third-party audits, ISO certification status, or on-site inspection records is present in the profile. The supplier lists comprehensive custom fastener capabilities across multiple material systems and surface finishes, positioning itself as a general-purpose metalworks operation rather than a specialist B7 bolt manufacturer.

The listing does not disclose production capacity, annual revenue, employee count, export markets, or reference clients. The payment structure of 30% advance, 70% before shipment, with samples at 100% advance, represents standard Chinese export terms for uncredit-established transactions. Buyers should conduct independent due diligence on the supplier's A193 B7-specific heat treatment and mechanical testing capabilities, as the broad material and grade offerings suggest generalist rather than specialist production. Direct contact to confirm tensile testing certification, lot traceability and mill test report availability is advisable before placing specification-critical orders.