01ZHChina · exact location under review · DISCOVERY CANDIDATE · REVIEW PENDINGZhejiang High Strength Fasteners Co., Ltd.
Specializes in high-strength fasteners for construction and energy sectors, including ASTM A325/A490 structural bolts, anchor rods, and wedge anchors. Certified to ISO 9001 and ISO 14001; conducts mechanical testing per ASTM F606 and tensile verification.
ASTM A325 boltsanchor rodswedge anchorsheavy-duty nuts
1 evidence items · Updated 01 Sep 2026 02HHChina · exact location under review · DISCOVERY CANDIDATE · REVIEW PENDINGHebei Helipu Fasteners Manufacturing Co., Ltd.
Produces carbon steel and alloy steel fasteners including hex cap screws, carriage bolts, and U-bolts for automotive, agricultural, and infrastructure use. Maintains in-house thread rolling, heat treatment, and zinc-nickel plating lines compliant with ISO 4042 and ASTM B633.
hex cap screwscarriage boltsU-boltsgrade 8.8 bolts
1 evidence items · Updated 01 Sep 2026