12CrMo 15CrMo St37 St42 Seamless Steel Tubes For Petroleum Cracking GB 9948
Seamless Steel Tubes for Petroleum Cracking GB 9948
Spec:
Material:10# 20# 12CrMo 15CrMo st37 st42
Size Range:
OD:4-1200mm
WT:0.3-200mm
General Length:4-12m
Tolerance:
According to the following tables or customers’ request.
Table1 The Tolerances of Outer Diameter and Wall Thickness Unit:mm
| Sort Code | Manufacuring Method | Nominal Size |
Tolerances | ||
| Common Level | High Level | ||||
| W-H | Hot Rolling (Extrusion) |
Outer Diameter D |
≤54
| ±0.50 | ±0.30 |
|
>54~325
| ±1%D | ±0.75%D | |||
|
>325
| ±1%D | - | |||
| Wall Thicknass S |
≤20
| +15%S -10%S | ±10%S | ||
|
>20
| +12.5%S -10%S | ±10%S | |||
| Hot Expand |
Outer Diameter D
| All | ±1%D | ||
|
Wall Thicknass S | All | ±15%S | |||
| W-C | Cold Drawn(Rolling) | Outer Diameter D |
≤25.4
| ±0.15 | |
|
>25.4~40
| ±0.20 | ||||
|
>40~50
| ±0.25 | ||||
|
>50~60
| ±0.30 | ||||
|
>60
| ±0.75%D | ±0.5%D | |||
| Wall Thicknass S |
≤3.0
| ±0.3 | ±0.2 | ||
|
>3.0
| ±10%S | ±7.5%S | |||
Table2 The Tolerance of Minimum Wall Thickness Unit :mm
| Sort Code | Manufacturing Method | Minimum Wall Thickness Smin |
Tolerance
| |
| Common Level |
High Level
| |||
| W-H | Hot Rolling(Extrusion) | ≤4.0 | +0.90 0 | +0.70 0 |
| >4.0 | +25%Smin 0 | +22%Smin 0 | ||
| W-C | Cold Drawn(Rolling) | ≤3.0 | +0.6 0 | +0.4 0 |
| >3.0 | +20%Smin 0 | +15%Smin 0 | ||
Our Advantage:
Professional steel tube maker
Superior quality and Competitive Price
First-class production technology and Double quality control
Fast delivery and Best services
Products Images:
What is your Guarantee?
1.SO9001:2008 and TS16949 certification, SGS, BV, TUV or other third party inspection is available.
2.High quality with competitive price.
3.Advanced technology, experienced engineer, ISO quality system for quality assurance and traceability.
Do you have agent or distributor in our country?
1.We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.
How is your production capability?
1.2000 tons monthly production capacity, 5000 tons monthly trading capability
2.Prompt and Timely shipment
How to get the sample?
1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users, etc
How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays. Quotations would be sent upon technical details confirmed by customer!
Any more questions about your doubts, please feel free to send us your emails or call!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.