ASTM A513 Tubing
ASTM A513 Tubing - industrial steel product
Precision Cold Drawn Seamless Tubing
Factory supply full range mechanical engineering precision tubes, hydraulic honed tubes, structural seamless pipes, custom bending, threading, turning machining service for all mechanical equipment frame, hydraulic, transmission parts.
Mechanical engineering acts as a core growth engine for Europe’s economy, distinguished by stringent quality standards and diverse industrial sub-sectors. Its key segments span construction machinery, agricultural equipment, hydraulic cylinder manufacturing, roller bearing production, hydraulic & pneumatic systems, roller fabrication, plus drilling and anchoring technology. Our comprehensive portfolio of premium steel tubing and pipe components delivers tailored solutions for every application within these fields. Browse our full product categories to source the exact material grade and specification matching your operational requirements.
Mechanical engineering steel tubes refer to cold drawn precision seamless pipes specially designed for mechanical structural components, transmission parts and hydraulic actuators. Compared with hot rolled ordinary pipes, cold drawing process achieves ultra-tight dimensional tolerance, uniform wall thickness and smooth inner & outer surface, greatly improving subsequent machining yield, bending forming performance and sealing stability of hydraulic assemblies.
We provide complete mechanical pipeline solutions covering structural frame tubes, hydraulic cylinder honed tubes, automobile precision tubes and matching butt-weld pipe fittings, complying with ASTM A519, EN10305, GB/T3639 international standards. Multiple heat treatment delivery states (BK / BKW / GBK / NBK) are optional to match different mechanical processing technologies such as bending, welding, turning and hardening.
| Standard System | Standard Code | Application Scope |
|---|---|---|
| US ASTM Standard | ASTM A519 / A519M | Carbon & alloy precision tubing for heavy machinery & auto parts |
| European EN Standard | EN 10305, EN 10268 | EU machinery OEM cold drawn precision tube, hydraulic blank tube |
| German DIN Standard | DIN 2391, DIN 2448 | Hydraulic cylinder blank, mechanical transmission shaft sleeve |
| Chinese GB Standard | GB/T 3639, GB/T 8162 | Domestic mechanical frame, automobile structural tube |
| Steel Grade | Material Category | Typical Mechanical Application |
|---|---|---|
| ST45 / 45# | Medium carbon steel | Shaft sleeves, general mechanical structural parts, easy hardening processing |
| E355 / ST52 | Low alloy high strength carbon steel | Hydraulic honed tube blank, machinery frame, light load bending components |
| ASTM A519 1026 | Low carbon structural steel | Auto chassis, automation equipment support frame, good weldability |
| 4130 Cr-Mo | Alloy steel | Medium heavy load transmission parts, medium pressure hydraulic cylinder |
| 4140 Cr-Mo | High strength alloy steel | Heavy machinery suspension, high pressure hydraulic cylinder, high fatigue parts |
| Mark | Treatment Status | Mechanical Processing Suitability |
|---|---|---|
| BK | Cold Finished Hard, No Annealing | Rigid shaft sleeves, parts without bending forming |
| BKW | Stress Relieved | General mechanical frames, slight cold bending parts |
| GBK | Fully Annealed | Auto bent structural parts, U-shaped hydraulic tube, deep drawing forming |
| NBK | Normalized | High fatigue transmission components, heavy load mechanical supports |
EN 10204 3.1 / 3.2 official MTC material test certificate issued for each batch, fully meet mechanical OEM factory incoming inspection and third-party audit standards.
Mechanical engineering precision tubes are bundled with high-strength steel straps, plastic protective end caps installed on both tube ends to avoid scratch and collision damage of precision inner & outer surfaces. Anti-rust oil coated inside and outside for long-distance ocean transportation.
Each bundle contains tubes of identical heat batch, grade and dimension with clear identification label. Wooden pallet or full 20GP/40GP container loading available, support EXW / FOB / CIF / DAP international trade settlement terms for global mechanical equipment manufacturers and auto parts suppliers.
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
