ASTM A36 steel round bars

ASTM A36 steel round bars from Laiwu Le Ren Trade Co., Ltd. are offered in hot rolled, cold drawn, and forged production forms to suit different machining and structural requirements. The source indicates manufacturing through Electric Arc Furnace, Ladle Refining Furnace, and Continuous Casting routes, which are standard primary steelmaking methods for this grade. ASTM A36 specifies minimum yield strength of 250 MPa and tensile strength of 400-550 MPa, with excellent weldability and formability characteristic of low-carbon structural steels. The supplier notes availability for structural applications including beams, columns, and general machinery manufacturing.

The carbon content in A36 typically falls between 0.25% and 0.29%, with manganese at 0.80-1.20% and phosphorus and sulfur each limited to 0.040% under the ASTM specification. Cold drawn bars offer tighter dimensional tolerances and improved surface finish compared to hot rolled, with typical diameter tolerances of h11 or h12 rather than the wider k13 range common for as-rolled product. Forged bars provide directional grain flow beneficial for heavy-section components subject to fatigue loading. Silicon content is typically 0.15-0.40% for deoxidation, and copper may be present up to 0.20% when specified for improved atmospheric corrosion resistance, though this is not standard.

Construction contractors, structural steel fabricators, automotive component manufacturers, and general engineering workshops represent the core buyer segments. The round bar form factor suits shafting, pinions, tie rods, anchor bolts, and general fabrication where bar stock is machined or welded into finished components. Laiwu Le Ren Trade Co., Ltd. is located at No.89 Qingdhui Business Street, Laicheng District, Laiwu, Shandong Province, China. Specific MOQ, pricing, lead time, and certification details beyond general ISO reference are not present in the source data and require direct supplier confirmation. Buyers should verify whether mill test certificates reference ASTM A36 specifically or the Chinese GB/T equivalent grade.

Laiwu Le Ren Trade Co., Ltd. operates from No.89, Qingdhui Business Street, Laicheng District, Laiwu, Shandong Province, China, with postal code 271100. The company is classified as an imported supplier with harbor-level trust signals, though the response rate shows 0.00% with zero average response hours, indicating minimal or no platform-tracked engagement at present. No establishment date, registered capital, employee count, annual revenue, or specific factory ownership details appear in the available source material.

The listing presents the company as a trade intermediary offering ASTM A36 round bars with flexible MOQ terms, though exact minimum quantities are not specified. The source mentions ISO certification in general terms without specifying which ISO standard, scope, or issuing body. Buyers should independently verify the supplier's actual manufacturing capability versus pure trading function, as the EAF-LRF-CC description could refer to mill partners rather than owned facilities. The Shandong location places the supplier within China's dense steel-producing region, with access to numerous mills producing long products including round bars.