ASTM A519 4130 4140 Quenched and Tempered Tube for Drill Rod

Grade AISI/ SAE 4130 and 4140 steel are an exceptionally tough metal vital to manufacturing, welding, cutting, and other high-stress applications. Their great heat treatment characteristics impart a high toughness and combine their great workability and machinability, allows 4130 4140 to be widely useful in drilling industry.

In comparison with other heat treatments, SAE/AISI 4130 4140 quenched and tempered tubes have the highest strength and most well-balanced mechanical properties. Dingxin produce 4130 QT, 4140 QT drill rod tubes with superior mechanical properties (yield strength (Rp0.2) up to 950 MPa, and tensile strength (Rm) up to 1000 MPa) to meet the most demanding exploration conditions.

● Excellent microstructure with grain size≥9

● High straightness especially tube ends

● High strength and wear resistance

● Tight tolerances, low eccentricity

Fully integrated manufacturing process

● Dingxin conduct in-house production from piercing, cold drawing, heat treatment, cutting to delivery. We control every aspect of process.

Strict raw material quality control

● We only adopt high quality alloy steel from the leading mills in China such as BAO steel, TPCO, SHA steel, etc.

● Every batch (Heat NO.) of raw material is under strict chemistry inspection, metallographic analysis before putting into production. No mix-up

Strict testing and inspection

● Dedicated straightness check and correction

● NDT (non-destructive testing) according to ASTM E309 100% applied to avoid surface defects and sub-surface cracks

● Test certificates verifying grade, chemistry and mechanical properties are available with all products

1.Q: Are you a trading company or manufacturer?

     A: Dingxin is a profession steel tube manufacturer locating in Jiaxing City, Zhejiang Province.

2.Q: How long is your delivery time?

    A: Generally it takes 30-50 days to manufacturer the pipes.

3.Q: What is your terms of payment?

     A: 30% advance payment, 70% balance against B/L copy.

Why choose us?

• Our Tube for Drill Rods provide the highest standards in safety and reliability.
• We are actively responding to the characteristics of the times of high-quality development, being an industry leader in providing quality ASTM A519 4130 4140 Quenched and Tempered Tube for Drill Rod and services, and creating healthy and sustainable social value.
• Our company is at the forefront of Tube for Drill Rods innovation.
• In the development of the company, the enterprise spirit of "practical, modest, dedicated and enterprising" has been formed, and this has served as the guide for the employees' behavior, creating a cohesive and innovative team and promoting the development of the company.
• We strive to continuously improve our Tube for Drill Rods to meet evolving customer needs.
• We always insist on providing considerate service to customers in the way they expect.
• We are dedicated to providing our customers with exceptional service while delivering quality Tube for Drill Rods.
• We adhere to the principle of 'sincere cooperation, mutual benefit and win-win', and constantly improve our service quality and technical level, and we will treat each partner's opinions and suggestions with caution.
• Our manufacturing process ensures the production of top-quality Tube for Drill Rods.
• We always adhere to the business philosophy of 'quality determines the market, brand creates brilliance', and sincerely welcome customers at home and abroad with full enthusiasm and sincere cooperation.

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