| Type: | Seamless |
|---|---|
| Technique: | Cold Rolled |
| Material: | Carbon Steel |
| Surface Treatment: | Polished |
| Usage: | Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose |
| Section Shape: | Round |
| Samples: |
|---|
| Customization: |
|---|
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Audited Supplier 
| Product Name | Honing Tube Pipe |
| Standard | DIN2391, EN10305, ASTM A519, GB/T 3639-200 |
| Material | Q355B Q355D C20,ST52,E355 SAE1026.CK45 4130 4140 STKM 13C |
| Heat treatment | BK+S |
| Specification | Outer diameter(mm) : 40-480mm |
| I.D Tolerance | H8-H9 |
| Length | Fixed Length, Random Length(3--9m)or as requests of customers |
| Straightness | 0.5-1/1000 |
| ID roughness | RA 0.1-0.8micron(max) |
| Payment term | FOB, CFR, CIF ,EXW, FCA and so on |
| MOQ | 3 tons |
| Technology | Honed & SRB(SKIVED AND ROLLER BURNISHED ) |
| Application: | hydraulic cylinder, swivel crane, injection machine and so on |
| Conservation | anti rust oiled inside and outside surface, plastic caps in both ends |
| Package | bundle with steel strip and knitting strip, or wooden case |
| Steel Grade |
Chemical Composition % | |||||
| C |
Si |
Mn |
P | S | Al | |
| ≤ | ≥ | |||||
| 1020,20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / |
| 1045,45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | / |
| Q345B | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | / |
| Q345D | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | 0.015 |
| 1026,25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | / |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | / |
| ST52 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | / |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.04 | 0.05 | / |
| Delivery Condition | Cold Finished (hard) (BK) | Cold Drawn and Stress-relieved (BK+S) | |||
| Steel Grade |
Tensile Strength (Mpa) |
Elongation (%) |
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (%) |
| 1020,20# | ≥550 | ≥8 | ≥520 | ≥375 | ≥15 |
| 1045,45# | ≥640 | ≥5 | ≥600 | ≥520 | ≥10 |
| 16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
| 1026,25Mn | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 |
| 27SiMn | ≥800 | ≥5 | ≥760 | ≥610 | ≥10 |
| ST52 | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
| SAE1026 | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 |
| Our Material | Material No. | Similar International Grade | Suitable for… |
| JIS G3445 STKM13C | ASTM MT1020 / BS ERWC3 / DIN ST45 / NF TU37b / ISO TS4 | Carbon steel tubes for machine structural purpose | |
| DIN 2391 ST52 | 1.0580 | JIS STKM19A / ASTM 1524 / EN E355 / ISO TS18 | Mechanical and automotive engineering |
| ST52 BK+S | 1.0580 | Low deformability without heat treatment after cold forming process and stress-relief annealing | |
| DIN 2393 ST52.3 | 1.0570 | ISO Gr.1 | Construction of chemical plant, pipe work and mechanical engineering use, |
| ASTM A106 | 1.0405 | JIS STPT410 / BS HFS410 / DIN ST45.8 / NF TU42c | Seamless carbon steel pipe for high temperature service Suitable for bending, flanging, welding and similar forming operations |
The raw material for rolling seamless carbon steel pipes is round tube blanks, which are cut into blanks by a cutting machine and sent to the furnace for heating via conveyor belts. The billet is fed into the furnace and heated at a temperature of approximately 1200 degrees Celsius. The temperature control in the furnace is a key issue. After the round tube is out of the furnace, it must be pierced through a pressure punching machine. The inner diameter of the steel pipe is determined by the length of the outer diameter of the drill bit of the sizing machine. After the steel pipe is sized, it enters the cooling tower and is cooled by spraying water. After the steel pipe is cooled, it will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydraulic test) by the conveyor belt for internal flaw detection. If there are cracks, bubbles, etc. inside the steel pipe, it will be detected. After the quality inspection of steel pipes, they must be selected strictly, and painted with serial numbers, specifications, and production batch numbers. It is hoisted into the warehouse by a crane.
| Working method | range | ID | H8 | H9 | H10 |
| cold drawn | 25-250 | 30-50 | +0.0390 | +0.0620 | +0.1000 |
| cold rolling | 25-150 | 50-80 | +0.0460 | +0.0740 | +0.1200 |
| cold drawn-honed | 40-250 | 80-120 | +0.0540 | +0.0870 | +0.1400 |
| cold drawn-SRB | 50-250 | 120-180 | +0.0630 | +0.1000 | +0.1600 |
| cold drawn -polished | 40-250 | 180-250 | +0.0720 | +0.1150 | +0.1850 |
| cold drawn-polish-SRB | 50-250 | as required |
as required |
as required |
as required |
1. Bundle and pack.
2. Warning for inclined end or flat end or according to buyer's requirements.
3. Marking: According to customer requirements.
4. Apply varnish.
5. Plastic covers at both ends.
Q1:who are we?
A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.
Q2. how can we guarantee quality?
A:Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.
Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.
Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese
Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts
Suppliers with verified business licenses
Audited Supplier 
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