| Payment Type: | L/C,T/T,D/P |
| Incoterm: | CIF,CFR,FOB,EXW |
| Transportation: | Ocean,Land,Express |
| Port: | Qingdao,Tianjin,Shanghai |
Model No.: ST45, ST52, E355, E255, A106B
Standard: Gb, Astm
Material: A53-A369, Q195-Q345, 10#-45#, 16mn, St35-St52
Section Shape: Round
Place Of Origin: China
Application: Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Oil Pipe, Chemical Fertilizer Pipe, Structure Pipe
Production Process: Cold Drawn
Certification: Ce
Special Tube: Thick Wall Pipe
Whether Alloy: Non-Alloy
Tolerance: ±1%
Category: Seamless Steel Pipe
Processing Service: Bending, Welding, Decoiling, Punching, Cutting
| Selling Units | : | Ton |
| Package Type | : | Standard Export Packing or Customized Packing |
| Picture Example | : |
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Product Description
Name: honed tubes, honing pipe, hydraulic cylinder tubes, pneumatic cylinder tubes, Honed Pipe, honing tube, seamless
Honed Steel Tube, precision tubes, cold drawn honed tubes, skived tubes, skived and roller burnished tubes, skived pipes,
SRB tube, SRB pipe, hydraulic SRB tube, hydraulic cylinder skived tubes
Popular standard and steel grade:
| EN10305-1 | E355 E235 E410 E470 C45E |
| DIN2391-1 | ST52 ST45 ST52.3 |
| ASTM A519 | SAE1020 SAE1045 SAE1026 |
| GB/T | 20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn |
Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel
Manufacture Method: cold drawn, cold rolled, Hot rolled+Deep Hole Boring
Heat Treating Method/Delivery Condition:
| BK | BKS | GBK | NBK | Q+T |
| +C | +SR | +A | +N | Q+T |
| Cold drawn | Stress relieved | Annealed | Normalized | QUENCHED + TEMPERED |
Hydraulic & pneumatic tube size and parameters:
| Manufacture method | Cylinder ID (mm) | Length (m) | Straightness (mm/m) | Tolerance on ID | Tolerance on WT | Roughness (μm) |
| Cold drawn | 40-420 | ≤16M | 0.2-0.5 | Depends on requirement | ±8% | 0.8-1.6 |
| Cold rolled | 30-100 | ≥14M | 0.2-0.5 | Depends on requirement | ±5% | 0.8-1.2 |
| Cold drawn-honed | 40-420 | 14M | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.8 |
| Cold drawn-skived & burnished | 40-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
| Deep hole boring- honed | 50-1000 | 12M | 0.2-0.3 | H8-H9 | ±8% | ≤0.8 |
| Deep hole boring- skived | 50-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Mechanical property:
| Final Supply Condition | Cold finished (Hard)(BK) | Cold drawn and stress-relieved (BK+S or + SR) | Hardness HB | |||
| Parameters | T.S obN/mm² | Elongation δ5% | T.S obN/mm² | Y.S OsN/mm² | Elongation δ5% | |
| 20# (A106B, ST45, E255) | >=550 | >=8 | >=520 | >=375 | >=12 | 175 |
| 45#(CK45) | >=650 | >=5 | >=600 | >=500 | >=10 | 190 |
| Q345B(ST52, E355) | >=640 | >=5 | >=600 | >=520 | >=15 | 190 |
| 25Mn | >=640 | >=5 | >=600 | >=510 | >=15 | 195 |
| 27SiMn | >=840 | >=5 | >=720 | >=600 | >=10 | 210 |
Chemical Properties:
Material C% Mn% Si% S% P% 20# 0.17-0.23 0.35-0.65 0.17-0.37 ≤0.035 ≤0.035 ST45 ≤0.21 ≥0.4 ≤0.35 ≤0.025 ≤0.025 E255 ≤0.21 0.4-1.1 ≤0.35 ≤0.025 ≤0.025 45# 0.42-0.50 0.50-0.80 0.17-0.37 ≤0.035 ≤0.035 Q345B ≤0.20 ≤1.70 ≤0.50 ≤0.035 ≤0.035 E355 ≤0.22 ≤1.6 ≤0.55 ≤0.025 ≤0.025 ST52 ≤0.22 ≤1.6 ≤0.55 ≤0.04 ≤0.04 25Mn 0.22-0.29 0.70-1.0 0.17-0.37 ≤0.035 ≤0.035 27SiMn 0.24-0.32 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035
1. MOQ: Generally Min Order Quantity can be 2-3 tons/size for tubes with OD below 250mm, and 10 tons/size for tubes with OD above 250mm. Sometimes, it depends on steel grade you need. If you need special grade like E410, E470 or alloy steel tube, MOQ should be 10 tons/size at least.
2. Delivery Time: Generally, our delivery time for honed tubes is around 40-60 days depending on the sizes and quantities. It will take us 15-30 days to get raw material. For example, if you need 3 tons of small size honed tubes 50mm*40mm with roughness of Ra0.25um max, it will take us at least 30 days to hone this size.Our factory
Packaging & Shipping
Usually we put anti-rust oil on the inside and outside of the pipes, cover it with a suitable plastic lid, and then wrap both ends or the whole body with bubble bags and snake bags. For some goods, they need to ship by LCL, we will packed in wooden boxes. For some customers who have special requirements, we will also do special treatment accordingly.
Contact us
If you have any question, please feel free to contact me by the email or telephone!
Mainly products cover Carbon Steel Pipe, Galvanized Steel Pipe, Seamless Steel Pipe, Square Steel Pipe, Honed Steel Tube, Special-shaped Steel Pipe, Galvanized Iron Wire and Steel Angle, H-Beam, Flat Steel, Round Steel, Channel Steel, etc.
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