Ningbo Steel Bolt Co., Ltd is based in China and lists a range of fasteners on Global Trade Plaza, including ASTM A307 Grade A Hex Bolts, ASTM A193 Heavy Hex Bolts, ASTM A325 Type 1 Heavy Hex Structural Bolts, ASTM A490 Type 1 Heavy Hex Structural Bolts, AS1252 High-Strength Structural Bolts, Heavy Hex Structural Nuts, and Flat Washers. The company states it was established in 1998. These products are described with specific standards, grades, materials, and surface treatments as provided by the seller. The bolts and nuts are made from carbon steel or stainless steel, feature hexagon heads with fine or standard threads, and undergo heat treatment. Surface treatments include HDG, black, zinc, YZP, plain, and Dacromet. Connection type is specified as common bolt across the product lines. Buyers can send an enquiry through Global Trade Plaza.