Product Description
Carbon steel pipes are made of steel ingots or solid round steels through perforation into capillary tubes, which are then hot-rolled, cold-rolled or cold-drawn. Carbon steel pipe plays an important role in my country's Steel Pipe industry.Carbon steel pipes are divided into two categories: hot-rolled and cold-rolled (drawn) steel pipes.
Hot-rolled carbon steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure, boiler steel pipes, alloy steel pipes, Stainless Steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.In addition to general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes.
Cold-rolled (pulled) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, non- Rust thin-walled steel pipe, special-shaped steel pipe. The outer diameter of hot-rolled seamless pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless pipes can reach 6mm and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipes can reach 5mm and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.General carbon steel pipe: It is made of 10, 20, 30, 35, 45 and other high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold-rolled.Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. 45, 40Cr and other medium carbon steel seamless pipes are used to manufacture mechanical parts, such as the stressed parts of automobiles and tractors. Generally, carbon steel pipes are used to ensure the strength and flattening test. Hot-rolled steel pipes are delivered in hot-rolled or heat-treated state; cold-rolled steel pipes are delivered in heat-treated state.
Product Specification
Product | SEAMLESS / ERW / SAW ALLOY STEEL PIPE |
Dimension | 6 mm - 1080 mm |
Thickness | 1mm - 135 mm |
Length | 3 m - 12 m or according to the requirements of clients |
Standard | ASTM GB DIN |
Steel grade | A106/53/179/214/192/210 A/B/C ST37.2/35.4/35.8/52/52.3/52.4/42/45 10# 20# 45# P2, P12, P11, P22, P5, P9, P91 T2, T11,T5,T9,T22, 4140, 12CrMo, 15CrMo, 12Cr2Mo, 1Cr5Mo, 2CrMo4, 1Cr9Mo, 10CrMo910, etc. |
Trade terms | FOB/CIF/CFR |
Payment terms | T/T, L/C |
Delivery port | Tianjin, China |
Delivery time | 10 or according to the real quantity of the tubes |
Surface treatment | Black painting Varnish painting 3PE Hot galvanized or other coating according to your requirements Bare tube |
End of tubes | Beveled, plain, thread, plastic caps |
Inspection | Ultrasonic examination, eddy inspection, hydrosttic testing etc. |
Package | Bundles, lossen or according to your requirements |
Certificate | API 5L/5CT, ISO, PED etc. |
Technical data
Chemical Composition
C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
0.05-0.15 | 0.30-0.60 | 0.025 max | 0.025 max | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
Mechanical Properties
Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
415 min | 205 min | 30 min |
Outside Diameter & Tolerance
ASTM A450 | Hot rolled | Outside Diameter, mm | Tolerance, mm |
OD≤101.6 | +0.4/-0.8 |
101.6<OD≤190.5 | +0.4/-1.2 |
190.5<OD≤228.6 | +0.4/-1.6 |
Cold Drawn | Outside Diameter, mm | Tolerance, mm |
OD<25.4 | ±0.10 |
25.4≤OD≤38.1 | ±0.15 |
38.1<OD<50.8 | ±0.20 |
50.8≤OD<63.5 | ±0.25 |
63.5≤OD<76.2 | ±0.30 |
76.2≤OD≤101.6 | ±0.38 |
101.6<OD≤190.5 | +0.38/-0.64 |
190.5<OD≤228.6 | +0.38/-1.14 |
ASTM A530 & ASTM A335 | NPS | Outside Diameter, inch | Tolerance, mm |
1/8≤OD≤1-1/2 | ±0.40 |
1-1/2<OD≤4 | ±0.79 |
4<OD≤8 | +1.59/-0.79 |
8<OD≤12 | +2.38/-0.79 |
OD>12 | ±1% |
Wall thickness & Tolerance
ASTM A450 | Hot rolled | Outside Diameter, mm | Tolerance, % |
OD≤101.6, WT≤2.4 | +40/-0 |
OD≤101.6, 2.4<WT≤3.8 | +35/-0 |
OD≤101.6, 3.8<WT≤4.6 | +33/-0 |
OD≤101.6, WT>4.6 | +28/-0 |
OD>101.6, 2.4<WT≤3.8 | +35/-0 |
OD>101.6, 3.8<WT≤4.6 | +33/-0 |
OD>101.6, WT>4.6 | +28/-0 |
Cold Drawn | Outside Diameter, mm | Tolerance, % |
OD≤38.1 | +20/-0 |
OD>38.1 | +22/-0 |
ASTM A530 | NPS | Outside Diameter, inch | Tolerance, % |
1/8≤OD≤2-1/2 | +20.0/-12.5 |
3≤OD≤18, WT/OD≤5% | +22.5/-12.5 |
3≤OD≤18, WT/OD>5% | +15.0/-12.5 |
OD≥20, WT/OD≤5% | +22.5/-12.5 |
OD≥20, WT/OD>5% | +15.0/-12.5 |
Product Display
Packaging And Transportation
FAQ
1.Why you choose us ?
Our company has been 12 years. We control the quality of the products very strictly, there are special people for the quality.
If you got lower price from other supplier ,we will pay back twice to customers about the higher price.
2.How long is your delivery time?
According to the quantity.Generally within 2-7 days if in stock.And 15-20 days if not in stock.
3.What is your payment terms?
A: By T/T 30% in advance ,and 70% before delivery.
B:100% L/C at sight.
C:By T/T 30% in advance,and 70% L/C at sight.
4.Do you provide samples ? Is it free?
Yes, we offer the sample for free but do not pay for the cost of freight.
5.What if the customer is not satisfied?
If there is a problem with the product,we take full responsibility.
If there is a problem in the transportation process,we will help you to solve it.