China Carbon steel hex bolt Manufacturers, Suppliers, Factory

Screws come in various patterns, but two of the most common are the slotted and cross shapes. Strictly speaking, there are three types of common patterns in daily life, with the simplest being the slotted shape.

Installing photovoltaic (PV) systems on rooftops is an excellent way to harness solar energy, reduce electricity costs, and contribute to a sustainable future.

​Safety is the primary consideration when working on a roof. A roof hook is an important tool that helps workers securely secure ladders to the roof.

Cage Nut is a type of nut commonly used in industrial and automotive applications. It is a square-shaped nut with wings on either side that, when compressed, secure the nut in place within the material.

Do you know why they are both hexagons, and what is the difference between outer hexagons and inner hexagons? Here, I will talk about them in detail from the appearance, fastening tools, cost, etc.

In March 2026, the management and production teams of Ningbo Gangtong Zheli Fasteners Co., Ltd. held a special quality improvement meeting at its 15,000 sqm factory in Zhenhai Chemical Industrial Zone, Ningbo, China. The event was launched to further enhance product stability and meet growing global demand for high‑strength structural fasteners. During the meeting, the team reviewed production processes, heat treatment controls, and inspection procedures, and finalized a new round of technical upgrades for heavy hex bolts, ASTM A563 nuts, and threaded rods. Led by senior engineers and production supervisors, the company will strengthen raw material testing and batch tracking to ensure full compliance with ASTM, ISO, DIN, and ANSI standards. This initiative aims to support stable delivery for overseas customers in North America, Europe, and the Middle East while strengthening the company’s reputation as a reliable China fastener supplier.