Product Overview

✅ We supply After quenching and tempering heat treatment, proceed with wire drawing, precision straightening, and cut-to-length operations. High‑carbon steel straight bars, marketed to industrial customers worldwide. The steel undergoes quenching and tempering to achieve a stable microstructure and consistent mechanical properties; it is then stress‑relieved through uncoiling to release coil‑induced stresses, followed by precision straightening and CNC‑controlled length cutting. The finished products exhibit excellent straightness, high dimensional accuracy, and outstanding batch‑to‑batch consistency, making them ideal for manufacturing spring components, construction machinery, agricultural equipment, and general‑purpose machine parts, while meeting the material specifications of overseas markets in Southeast Asia, the Middle East, Europe, and beyond.

Craftsmanship Highlights

✅ Quenching and tempering heat treatment (a preliminary process) employs precision‑controlled quenching combined with high‑temperature tempering to transform the microstructure of high‑carbon steel into a uniform tempered sorbite, balancing tensile strength, hardness, and impact toughness while significantly enhancing fatigue resistance and fundamentally mitigating the inherent brittleness of high‑carbon steels. Upon completion of quenching and tempering, the material’s mechanical properties are fully established.

✅ Wire drawing after tempering + straightening + cutting (with subsequent finishing)

Key points: Only after the tempering process is fully completed is the tempered coil unwound to relieve residual winding stresses; it is then straightened using a multi‑roller precision straightening system to eliminate deformation caused by uncoiling; finally, it is cut to length by CNC equipment. Unlike straightening performed prior to heat treatment, this approach ensures that the steel’s mechanical properties remain stable and are not altered by subsequent heating. The straightening and cutting operations serve solely to refine the profile and dimensions, guaranteeing straightness, dimensional tolerances, and clean, burr‑free cut surfaces. Upon receipt, customers can proceed directly to further machining, eliminating the need for secondary straightening and cutting and thereby reducing processing time and material waste.

Core Advantages

✅ Stable performance: Pre‑tempering ensures consistent mechanical properties; subsequent straightening and alignment do not alter the base steel’s strength, offering excellent fatigue resistance and wear resistance, making it ideal for applications subjected to sustained loads.

✅ Precision and Reliability: After tempering, the coil is unwound and straightened to relieve residual stresses, followed by precision straightening. +  CNC fixed-length cutting, excellent straightness, precise length dimensions, and high-quality cut surfaces. ✅ Batch Consistency: Complete production records and batch testing; each batch is accompanied by material certification. /  Mechanical testing report, facilitating acceptance by overseas customers.

✅ Trade‑ready: Ocean‑grade rust‑proof packaging, moisture‑resistant and impact‑protected; custom specifications available, with full compliance to export documentation.

Quality Control

✅ Raw material incoming inspection; full‑process temperature control records for quenching and tempering heat treatment; after quenching and tempering, samples are taken to verify that mechanical properties meet specifications before proceeding to the wire‑straightening and cutting stage. Finished products undergo batch‑by‑batch testing for hardness, tensile strength, dimensional tolerances, and straightness, with nondestructive testing available upon request. Rigorous quality control at every process step ensures the reliable delivery of large‑volume export orders.

Application areas

✅ Spring components, construction machinery parts, agricultural machinery parts, precision machine shaft blanks, fastener blanks, and more.

Collaboration Invitation

✅ We maintain stable production capacity and boast extensive experience in international trade deliveries. We offer custom manufacturing based on customer‑provided drawings and specifications, and welcome industrial clients worldwide to discuss sample orders and bulk procurement. We look forward to partnering with domestic and international collaborators to deliver reliable, high‑carbon steel precision‑machining material solutions.