Product Description
A519 seamless tubing is engineered for reliable performance in mechanical, hydraulic, automotive and general engineering applications. Manufactured in strict accordance with ASTM A519 standards, this tubing offers excellent dimensional accuracy, structural integrity and durability for high-stress working environments. Our A519 seamless tubing ensures consistent wall thickness, smooth internal and external surfaces, and stable mechanical properties, making it ideal for machining, bending, flaring and welding operations. Designed for long service life and dependable operation, it supports reliable performance across diverse industrial conditions.
Product Features & Advantages
- Cold-finished & hot-finished options for precise machining
- Uniform wall thickness and concentricity
- High tensile strength & good toughness under pressure
- Stable performance in welding, bending, and forming
- Full material traceability and in-house inspection
Chemical Composition&Mechanical Properties
|
Grade |
C |
Mn |
P (max) |
S (max) |
Si |
|---|---|---|---|---|---|
|
1010 |
0.08–0.13 |
0.30–0.60 |
0.040 |
0.050 |
0.10–0.35 |
|
1020 |
0.18–0.23 |
0.30–0.60 |
0.040 |
0.050 |
0.15–0.35 |
|
1045 |
0.42–0.50 |
0.60–0.90 |
0.040 |
0.050 |
0.15–0.35 |
|
4130 |
0.28–0.33 |
0.40–0.60 |
0.035 |
0.040 |
0.20–0.35 |
|
Grade |
Tensile Strength (min) |
Yield Strength (min) |
Elongation (min) |
|---|---|---|---|
|
1010 |
325 MPa |
195 MPa |
25% |
|
1020 |
390 MPa |
245 MPa |
25% |
|
1045 |
520 MPa |
435 MPa |
16% |
|
4130 |
655 MPa |
435 MPa |
15% |
Our Company & Factory
Jiangsu Cunrui Metal Products Co., Ltd. is a professional manufacturer and exporter of seamless steel tubing with a modern production base, complete hot-rolling, cold-drawing, heat treatment, and precision machining lines.
Factory Strengths
- Competitive factory-direct pricing
- Strict quality control from raw material to finished goods
- Full in-house testing: ultrasonic, hardness, tensile, dimensional inspection
- Complete certification system supporting global markets
- Third-party transshipment solutions to help reduce tariffs and simplify customs
Certifications & Trust
Our A519 seamless tubing and other products are backed by full industry certifications and test reports. Every batch comes with material test certificates (MTC) and inspection documents. Stable quality and transparent service have built strong trust with global buyers.We serve customers worldwide, many of whom become long-term partners after the first order. Clients value our stable quality, on-time delivery, professional support, and after-sales service. We keep improving to support mutual growth.
Packaging & Logistics
- Standard packaging: wooden box, iron crate, plastic cap, woven bag
- Custom packaging available for export and brand requirements
- Full container and LCL shipping supported
- Professional loading, secure bracing, and damage prevention
- Fast lead time and flexible delivery schedule
- Long-term cooperation with reliable freight forwarders
Transportation
Customized
Sea Freight
Air Freight
Land Freight
FAQs
Q1: Can you produce custom sizes for A519 seamless tubing?
Yes, we support custom OD, WT, length, and heat treatment based on your drawing or standard.
Q2: Do you provide MTC and third-party inspection?
We provide EN 10204 3.1 certificate, and accept BV, SGS, or other third-party inspections.
Q3: What is your typical MOQ and lead time?
MOQ is flexible for trial orders. Standard delivery is 7–15 days for stock items, 15–30 days for production.
Q4: Can you help with tax and logistics optimization?
Yes, we offer safe transshipment solutions to help lower landed cost and speed up customs clearance.
Q5: Do you offer sample support?
Free samples are available for qualified customers; you only need to cover shipping cost.
