ASTM A519 Standard Cold Drawn Seamless Mechanical Tubing
Our C45E precision steel tube is a high-performance, cold drawn seamless mechanical tubing engineered specifically for heavy-duty industrial applications. As a trusted manufacturer, we ensure our tubes strictly conform to the ASTM A519 standard for cold-drawn seamless mechanical tubing, guaranteeing superior dimensional accuracy and internal strength.
Material Equivalence: In the precision tubing industry, the European grade EN C45E is highly equivalent to ASTM A519 grade SAE 1045. This medium carbon steel provides excellent hardness and wear resistance, making it the ideal raw material for manufacturing c45e customized cylinder parts and reliable seamless tubes for delivery cylinders.
Seamless Mechanical Tubing Sizes & Manufacturing Standards
| Size Range (OD) | Outer Diameter: 40mm – 580mm |
| Size Range (ID) | Inner Diameter: 30mm – 500mm |
| Wall Thickness (WT) | Customizable up to 35mm |
| ASTM A519 Grades | SAE 1026, SAE 1045, 4130, 4140 |
| Equivalent EN/DIN Grades | EN 10305-1 (C45E, E355, E470) / DIN 2391 (ST52) |
| Manufacturing Process | Cold drawn, Cold rolled, Hydraulic cold drawn, Hot rolled + deep hole boring |
Bore Treatment & Precision
Treatment Methods: Honing or Skiving & Roller Burnishing (SRB)
Surface Roughness (Honed): ≤ Ra 0.25μm / Ra 0.35μm
Surface Roughness (SRB): ≤ Ra 0.25μm
Straightness: ≤ 0.5mm/m
Tolerance Standard: Strict ISO H8 precision
Delivery Conditions & Finish
+C: Cold rolled | +LC: Cold drawn
+SR: Stress relieved | +A: Annealed
+N: Normalized | Q+T: Quenched & Tempered
End Finish: Plain ends, square cut or bevelled.
Protection: Int/ext anti-rust oil coating, plastic end caps.
Applications of ASTM A519 Mechanical Tubing
Hydraulic Cylinder Barrels: Optimal performance for mobile hydraulic systems in excavators, forklifts, and agricultural machines.
Seamless Tube for Delivery Cylinder: High-strength, smooth-bore tubes designed for extreme pressure transfer.
Power Transmission & Axles: Gear housings and mechanical drive shafts utilizing a519 mechanical tubing.
OEM & Machining Workshops: Providing tight dimensional tolerances for precision CNC mechanical components.
Frequently Asked Questions
Q1: Do your honed tubes meet ASTM A519 mechanical tubing standards?
A: Yes. Our cold drawn seamless tubes fully comply with A519 mechanical tubing specifications for both carbon and alloy steel grades.
Q2: What are the typical seamless mechanical tubing sizes you offer?
A: We cover a massive size range: OD up to 580mm, ID up to 500mm, and wall thicknesses customized up to 35mm depending on structural strength requirements.
Q3: Can I request customized steel grades outside of C45E?
A: Yes, we offer a wide range of alloy and carbon steel grades including ST52, 25CrMo4, 42CrMo4, E355, and SAE 1045/1026.
Leading China Manufacturer of Seamless Mechanical Tubing
Established in 2002, CHENGXIN is a trusted factory for cold drawn seamless tubes, hydraulic honed tubes, and c45e precision steel tubes. With over 30,000㎡ of modern factory space, 2 hydraulic cold drawing benches, 4 chain drawing lines, and 2 ERW mills, we export premium tubes to Southeast Asia, Europe, South America, and the Middle East (ISO 9001 & 14001 Certified).
Looking for a reliable supplier? Contact us now to receive detailed specifications, MTC test reports, or to arrange third-party inspection!
