Basic Info.

Additional Info.

Product Description

1. Honed hydraulic cylinder tube 
2. Stadnard&material: ASTM A106 Gr. B, ASTM A519 SAE1020, SAE1045, SAE1026, SAE4130, SAE4140, EN10305-1 E355, 25CrMo4, 42CrMo4, DIN2391 ST52, GB/T8713 20#, 45#, 25Mn, 27SiMn, 30CrMo, 40CrMo. 
3. Size range: 50mm*40mm - 480mm*420mm 
4. Manufacture method: Cold rolled, cold drawn 
5. Delivery condition: BK, BKW, BKS, GBK, NBK 
6. Treatment of internal surface: Honed 
7. Tolerance of ID: H7, H8, H9 
8. Tolerance W. T: +/-5% 
9. Roughness of internal surface: 0.125um-0.4um 
10. Straightness: 0.5mm/1000mm 
11. Standard packing: Slightly oil coating. Packed in bundles tied with steel strips. 
We are professional manufacturer of steel pipe, which have been approved by API and ISO system. 

Our products introduction: 
Boiler tube, Pressure tube 

(Standard: ASTM A178 Gr. A/C/D, ASTM A192, ASTM A210 Gr. A/C; BS3059; EN10216-1/2; DIN17175 ST35.8/45.8, DIN1629 ST37.0/44.0/52.0); 


Pipe for high temperature: 
ASTM A335. 

Pipe for low temperature: 
ASTM A333 A334. 

Heat Exchanger tube 

(Standard: ASTM A179); 

Oil line pipe(Standard: API 5L X42/46/52 etc), 

Precision seamless steel tube for Mechanical and Automobile 

(Standard: ASTM 519/A513/822, DIN2391ST35/45/52, EN10305-1E215/235/355); 

Alloy tube 

(Standard: ASTM A213 T11/12/22/5/9, ASTM A335 P11/22/12/5/9, ASTM A199 T11/22/5, ASTM A209 T1/1A/1b; EN10216-2); 

Fluid Transportation Service 

(Standard: ASTM A106 Gr. A/B/C, ASTM A53 Gr. A/B); 

Company Operation principle: Integrity, Quality, Service. 

Quality Control: 
Our quality control department consists of experienced technicians. These personnel strictly control the whole production procedure, from introduction of raw materials to finish products. They ensure high quality products for our customers.