Carbon SMLS Steel Oil Well Pipe

NAME Carbon SMLS Steel Oil Well Pipe
OD 30mm-711mm
Wall thickness (W.T.) 2mm-60mm
International Standard International Standard
Standard API 5CT
Materials API J55, API K55, API L80, API N80,API
Technique 1.Welded
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Product Details

Product Details

As industrial applications have evolved and grown more complex, the piping products and systems that serve them have had to keep pace.

Brief Introduction

Carbon SMLS Steel Oil Well Pipe

OD Size


Wall thickness (W.T.)



R1-R3 or as customer’s requirements

International Standard

ISO 9001-2008




API J55, API K55, API L80, API N80,API P110,H40,M65,C90,T95,C95,Q125,V150etc.


In plain ends or bevelled ends or as per customer's requirements





1.Packed in waterproof plastic bags

2.Big OD: in bulk

3.Small OD: packed by steel strips

4.According to the requirements of customers


BTC (Buttress Thread Coupling),
STC (Stub(Short) Thread Connector),
LTC (Long Thread Connector)



or no thread

Main market

Middle East,Africa, Asia and some European country and America ,Australia

Country of origin

China Tianjin


2000 Metric Tons per Month

Surface Treatment

2PE,3PE,Black painted,anti-corrosion oil or as per your requirement

Marking: as per customer's requirement


With Hydraulic Testing, Eddy Current, Infrared Test


1.Payment terms :T/T ,L/C

2.Terms of trade :FOB ,CFR,CIF ,EXW

3.Minimum order :25 tons

Production Size

API Oil Casing Pipe
Outer DiameterWall ThicknessGradeThreadLength
4 1/2"114.314.14-22.479.50-15.10J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
5 1/2"139.720.83-34.2314.00-23.00J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
6 5/8"168.2829.76-35.7220.00-24.00J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
7 5/8"193.6835.72-63.6924.00-42.80J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
8 5/8"219.0835.72-72.9224.00-49.00J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
9 5/8"244.4848.07-86.9132.30-58.40J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
10 3/4"273.0548.73-97.7732.75-65.70J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
11 3/4"298.4562.50-89.2942.00-60.00J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3
13 3/8"339.7271.43-107.1548.00-72.00J55/N80/P110/K55/L80LTC/STC/BTCR1/R2/R3

Carbon SMLS Steel Oil Well Pipe

Small diameter cold drawn seamless steel tube

Seamless steel tube for geological drilling and oil drilling: to explore the structure of underground rock strata, groundwater, oil, natural gas and mineral resources, the use of drilling RIGS drilling.Drilling is indispensable for oil and natural gas exploitation. Seamless steel pipe used for oil drilling for geological drilling is the main drilling equipment, mainly including outer core pipe, inner core pipe, casing pipe, drill pipe, etc.Due to the drilling pipe to go deep into the thousands of meters formation depth work, working conditions is very complex, drill pipe under pull, 

pressure, bending, torsion and uneven impact load stress, but also by mud, rocks and wear, therefore, requires tubing must have sufficient strength, hardness, wear resistance and impact toughness, steel pipe steel with "DZ" pinyin "(geology) plus number one on behalf of the steel yield point, said common steel grade DZ45 MNB 45, 50 mn;DZ50 40Mn2, 40Mn2Si;DZ55's 40Mn2Mo, 40MnVB;DZ60's 40MnMoB and DZ65's 27MnMoVB.All steel tubes are delivered in heat-treated condition.

Petroleum cracking pipe: seamless pipe for furnaces, heat exchangers and pipelines in petroleum refineries.Commonly used high quality carbon steel (10, 20), alloy steel (12CrMo, 15CrMo), heat resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti) manufacturing.In addition to the chemical composition and various mechanical properties of the steel pipe, but also to ensure that water pressure, flattening, such as flaring test, and surface quality and non-destructive inspection.Steel tubes to be delivered in heat treated condition.

Stainless steel pipe: with all kinds of stainless steel hot rolled, cold rolled stainless steel pipe, widely used in petroleum, chemical equipment pipelines and various USES of stainless steel structure parts, in addition to the chemical composition and mechanical properties should be guaranteed, where used as a bearing fluid pressure steel pipe to ensure that the water pressure test qualified.All kinds of special steel pipes shall be guaranteed according to the specified conditions.



Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

 has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.


With the sense of responsibility, customer-centered, market-oriented, service-oriented, spot supply as the main body, good reputation, excellent business quality, integrity, conscientious work, perception of society and the spirit of Bianjin, we are committed to creating a win-win, easy and convenient large-scale integrated steel procurement for customers Platform.

The company upholds the enterprise tenet of integrity-based and customer-oriented, constantly strengthens internal management and builds an elite team, and will: all for users throughout the whole process of economic management, for this purpose, to provide customers with high-quality products and excellent services.





Edit by Ms. Vicky of  CSPG

Contact us directly by:

Email:  ,

Tel / Whatsapp: +86-180327140146

Skype: cnspipe002

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