seamless pipe

seamless pipe

3 year ago

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Shandong Guanzhou Iron and Steel Group Co., Ltd

 3 year year

Product details

Product Introduction

Seamless steel pipes / tubes

Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids.

Steel Pipe & Tubing - All you need to know

Steel Pipe & Tubing seem similar at first blush and in fact they share many characteristics but they also have some important differences.

Definitions:

Carbon Steel Seamless Pipe is a hollow steel shape intended for structural purposes and made from carbon, stainless, or galvanized steel further divided as:

Mechanical Tubing is used in low stress applications such as fences, kitchens, restaurants, hospitals, solar panels and made with wall thicknesses up to 10 gauge.

Structural Tubing is for high stress structural application like bridges, buildings, roll cages, and underwater platforms with wall thickness from 3/16" and up. It is often referred to as Hollow Structural Sections or just the acronym HSS.

Pipe is a hollow structure that is intended to carry material such as liquids, gasses, or even solids. Its wall thickness is described by its Schedule and it is often broken down by type using the method of manufacturing it, either ERW or Seamless.

How it's made:

Both Tubing and Pipe are manufactured by the first two methods below. The third is reserved for Tubing only.

Electric Resistance Welded, often abbreviated as ERW, is a process that uses specific machinery to shape the pipe and tubing. A continuous steel sheet is unwound from a coil and shaped using contoured rollers, forcing the edges together under pressure. These edges are then welded together by heating the material to over 2,000 degrees. After welding, the pipe or tubing is cut into the exact size needed.

Seamless Pipe (and tubing) is made by extruding a steel block or by drilling a solid steel bar. Next, the extrusion or the drilled steel bar is cold drawn through a dye to achieve the diameter and thickness needed. Because this process can cause mechanical hardening, sometimes the material is annealed and straightened as a final process. Seamless Pipe & Tubing is subdivided as:

Cold Drawn Seamless, or CDS, exhibits precise tolerances and a good surface finish.

Hot Finished Seamless, or HFS, has less critical tolerances and somewhat scaly finish and is not as strong as CDS.

For Drawn over Mandrel, or DOM tubing, the first stages of manufacturing are identical to ones used to make electric resistance welded tubing, but in the finishing stages the entire flash weld is taken out and the tube is cold drawn over a mandrel. A mandrel is a round object against which material can be forged or shaped. The cold drawn process provides the tube with better dimensional tolerances, improved surface finish and the strongest weld strength achievable.

Other models of seamless tubes:

There are many types of Seamless Pipe, such as A106 Seamless Pipe and A53 Seamless Pipe, which belong to the American standard seamless pipe, but A106 seamless pipe is called seamless steel pipe for high temperature operation, generally used for pressure pipes, and A53 seamless steel pipe is generally used for less demanding working environment. If you want to know the model and function of other seamless steel pipes, please feel free to contact me.

Product Specification

Standard	API, ASTM, BS, DIN, GB, JIS
Outer Diameter	21.3mm-660mm
Wall Thickness	0.5mm-20mm
Dia Tolerance	Control with in the standard, OD:±1%, WT:±10%
Materials	10#, 20#, 45#, Q235, Q345, Q195, Q215, Q345, ASTM A53/A106/A178/A333/A335, ST37, ST37-2, DIN 1629 ST35, ST45, DIN 17175 ST35.8, DIN 17175 19Mn5, 16Mn, Q345B, T1, T2, T5, T9, T11, T12, T22, T91, T92, P1, P2, P5, P9, P11,P12, P22, P91, P92, 15CrMO, Cr5Mo, 10CrMo910, 12CrMo, 13CrMo44, 30CrMo, GR.1, GR.3, GR.6, GR.7, Gr.B, X42, X46, X52, X60, X65, X70, X80, X100
Zinc coating	Pre galvanized steel pipe: 60-150g/m² Hot dipped galvanized steel pipe:200-400g/m²
Type of pipe coating	Epoxy powder
Inspection	ISO,BV,SGS,MTC
Packing	Steel strip packed. Standard Export Seaworthy Package. Suit forall kinds of transport,or as required
Application	Accessorize, machinery parts, structure steel pipe, piling pipe, sewage and clear water transportation, Line pipe for petroleum and so on
MOQ	5metric ton,sample order accepted
Shipment time	Within 7-10 workdays after receiving deposit or L/C
Market	Southeast Asia, Middle East, Africa, Europe, South American and so on

Below is our product catalog of steel pipe

Descriptions	Grades	Standard	Specification *(ODWT)mm**	Usage
Structural steel pipe	20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2, SAE1018, SAE1020, SAE1518, SAE1045.	GB/T8162-2008	6-1020*1.5-100	For commom structure
Fluid steel pipe	10#, 20#, ASTM A106, A210, A53, 16Mn, Q345A.B.C.D.E, Q295B.C.D.E	GB/T8163-2008	8-630*1.0-40	Fluid feeding
High pressure boiler pipe	20G, 15MnG, 20MnG, 15CrMoG, 12Cr1MoVG, St35.8, St45, SA106b, SA106c, SA210a, SA210c, A335P2, P11, P12, P22, P91, P92, A213 T2,T9, T11, T12, T22, T23, T91	GB/5310-2008, ASTM A 106-99, DIN 17175-79	14-630*2-80	Temperature-resistant seamless steel pipe far high-pressure boiler
Oil casing pipe	API SPEC 5CT J55, K55, N80, L80, C90, C95, P110	API SPEC 5CT, SY/T6194-96, GB/T222-84,	10-530*1.5-36	Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipeline
Pipeline	API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTM A53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245	API SPEC 5L, ISO 3183, GB/T 9711	60-630*1.5-40	Carrying gas,water or oil in the industries of petroleum and natural gas
Alloy steel pipe	4140, 42CrMo, 32CrMo, 15CrMo, Cr5Mo, 13CrMo44, 12Cr1MoV P22 T91,P91,P9, T9, Wb36	GB5310-95, GB9948-88, ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JISG3467-88, JISG3458-88	16-824*2-100	The seamless steal pipes features resistance to high presure,high/low temperature and corrosion ano is used in the industries of petroleum, chemical engineering and. Electric pwer as well as boiler
Hydraulic prop pipe	20#, 45#, 27SiMn, 30CrMoSiA	GB/T17396-2009	70-377*9-40	Coal mine hydraulic support and pillar cylinder, column, can also be used for other hydraulic cylinder, column

ASTM A106 Seamless steel pipe

Standard

Trademark

Chemical components

Mechanical property

P,S

Tensile Strength

(Mpa)

Yield Strength

(Mpa)

Elongation

(%)

ASTM A106

≤0.30

≥0.10

0.29~1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≥30

≤0.35

≥0.10

0.29~1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥485

≥275

≥30

Chemical Composition of seamless steel pipe:

Grade	Chemical composition (%)
Grade	C	Mn	Si	P	S	Al
Q235A	0.14~0.22	0.30~0.65	≤0.30	≤0.045	≤0.050
Q235B	0.12~0.20	0.30~0.67	≤0.30	≤0.045	≤0.045
Q235C	≤0.18	0.35~0.80	≤0.30	≤0.040	≤0.040
Q235D	≤0.17	0.35~0.80	≤0.35	≤0.035	≤0.040
Q345A	≤0.20	≤1.70	≤0.50	≤0.035	≤0.035
Q345B	≤0.20	≤1.70	≤0.50	≤0.035	≤0.035
Q345C	≤0.20	≤1.70	≤0.50	≤0.030	≤0.030	≥0.015
Q345D	≤0.18	≤1.70	≤0.50	≤0.030	≤0.025	≥0.015
Q345E	≤0.18	≤1.70	≤0.50	≤0.025	≤0.020	≥0.015

Product Display

FAQ

Q1:Can you send samples?

A:Of course, we can provide customers with free samples and express shipping service to all over of the world.

Q2:What product information do I need to provide?

A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.

Q3:It's my first time to import steel products, can you help me with it?

A:Sure,we have agent to arrange the shipment, we will do it together with you.

Q4:What ports of shipment are there?

A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.

Q5:What about product prices information?

A:Prices various according to periodic price changes of raw materials.

Q6:What is your terms of payment ?

A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.

Q7:Do you provide custom made Products service?

A: Yes,if you have your own design , we can produce according to your specification and drawing.

Q8:What are the certifications for your products?

A:We have ISO 9001, MTC, third parties’ inspections are all available such SGS, BV ect.