Import Flat Files — Buy in Bulk from Supplier in China

The Flat files from Shijiazhuang Shuangjian Tools Co., Ltd. are hand tools made from high-carbon steel, designed for precision shaping and deburring of metal, wood, and plastic. They feature a rectangular cross-section with parallel faces and a single-cut or double-cut tooth pattern, depending on the grade. Lengths range from 100 mm to 300 mm, with widths from 10 mm to 50 mm and thicknesses of 1.5 mm to 3.0 mm. The files are not magnetized and have no coating applied.

The steel used is typically 1075 or equivalent carbon steel, heat-treated to achieve a hardness of 58 to 62 HRC. The cutting edges are ground to a consistent angle of 60 degrees, with tooth density ranging from 10 to 30 teeth per inch depending on coarseness. Standard finishes include black oxide for corrosion resistance or plain finish for industrial use. The files are not stamped with brand logos and are packed in paper sleeves or bulk in cardboard boxes.

These files are commonly purchased by machine shops, automotive repair facilities, and prototyping labs for finishing castings, removing weld beads, and preparing surfaces for welding or painting. Buyers typically order in sets of 5 to 20 pieces, with mixed sizes. Packaging is usually non-retail, intended for industrial bulk use. Trade terms are generally FOB Shijiazhuang, with payment via T/T. MOQ and lead time are not stated and must be confirmed directly with the supplier.

Shijiazhuang Shuangjian Tools Co., Ltd. is located in Luquan Hi-Tech Zone, Hebei Province, and operates as a manufacturer of hand tools including files, rasps, and scrapers. The company is classified as an imported-tier supplier with harbor-tier verification, indicating basic compliance with platform requirements. No details are provided regarding production volume, workforce, or export history. The listing shows no response rate or average response time, suggesting limited buyer communication capability.

The supplier does not claim ISO certification, in-house testing, or brand ownership of the tool designs. There is no mention of product development, quality control processes, or past clients. Buyers should treat this as a low-profile manufacturer with minimal public footprint. All technical claims must be verified through physical samples or third-party inspection before bulk orders.