Your ERW/LSAW Steel Pipe manufacturer in China
LONGMA is one of China leading ERW/LSAW steel pipes manufacturer since 2003, which is certified by API 5L, ISO9001, FPC. We have long-term and close cooperation with major steel mills in China; help us to get high quality steel plates at very competitive prices and very short delivery time. Pipe size from 2” to 72”(60.3-1,829mm), length up to 18 meters.
- 16 JCOE production lines with an annual output of 300,000 tons
- Two factories, 200,000 square meters of plant
- Founded in 2003, it has 20 years of rich experience in steel pipe production
- More than 60 senior technical personnel.
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Our ERW/LSAW Steel Pipe Product List
Longma produce & export ERW/LSAW steel pipes with specification: φ21.3-1,422mm(1/2″-56″)
Standard: API 5L, ASTM A53, AS/NZS 1163:2016, EN10210, ASTM A671/A672, ASTM A691…
API 5L LSAW line pipe
- Grade: B, X42, X46, X52, X56, X60, X65, X70, X80
- Level: PSL1, PSL2, SOUR (N, Q, M, R)
- Size: up to 72″
ASTM A53 B ERW steel pipe
- Grade: B
- Size: 2″-26″
- Surface: Bare, Black, HDG
AS/NZS 1163 hollow section
- Grade: C250, C350, C450 L0
- Size: 114.3-1422mm
- Type: Round pipe, Bend pipe
ASTM A691 EFW steel pipe
- Grade: 1Cr, 1-1/4Cr, 2-1/4Cr
- Class: 10,11,12,13,20,21,22,23,30,31,32,33
- NACE MR0175/MR0103: HIC, SSC
ASTM A671 EFW steel pipe
- Grade: CA55, CB60, CB65, CB70, CC60, CC65
- Class: 10,11,12,13,20,21,22,23,30,31,32,33
- Size: OD up to 660.4mm; WT up to 75mm
ASTM A672 EFW steel pipe
- Grade: CA55, CB60, CB65, CB70, CC60, CC65
- Class: 10,11,12,13,20,21,22,23,30,31,32,33
- Size: OD up to 660.4mm; WT up to 75mm
ASTM A252 steel pipe piles
- Grade: 1,2,3
- Out diameter: 219.1-1016.0mm
- Type: ERW, LSAW/DSAW
EN10219 structure hollow section
- Grade: S235JRH,S235J0H, S355JRH,S355J0H,S355J2H
- Type: ERW, LSAW
- Size: OD: 21.3-1219mm WT: 2-100mm
FBE, 2PP, 3LPE coating pipe
- Standard: DIN30670/30678, CSSA Z245.20, AWWA C210
- Coating: FBE, 2PP, 2PE, 3LPE, 3LPP, Zinc-rich epoxy primer coating pipe
- Size: OD: pipe wall thickness max 30mm
Our DC Gear Motor Product List
SLW designs and manufactures DC motors and gearboxes, while providing gearbox motor solutions, from gearbox to motor design and production, automated equipment production and imported lathes and gear hobbing equipment to make transmission more precise and efficient
DC Planetary Gear motors
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DC Planetary Gear motors
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DC Planetary Gear motors
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DC Planetary Gear motors
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DC Planetary Gear motors
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ABOUT LONGMA
- Foundin 2003, specialized in produce ERW, LSAW, DSAW steel pipes with an annual output of 300,000 tons.
- Two factories, 200,000 square meters of plant.
- Advanced production equipment imported from Germany, 16 JCO production lines.
- More than 300 employees and more than 60 technicians provide efficient production operations and technical services.
- API 5L(No. 5L-0685, Expiration date: 16th,Nov,2024), ISO9001, ISO14001, ISO18001, FPC certificates.
- Exports high quality steel pipes to more than 60 countries around the world.
JCOE LSAW steel pipes production line
Annual output of 300,000 tons of LSAW steel pipes, with out diameter Φ406mm- 1626mm (16″ – 64″), wall thickness 6.0mm- 75mm (1/4″ – 3″), length 18 meters max.
X-Ray Testing
Ultrasonic testing
Tack welding
Plate ultrasonic testing
Pipe forming
Pipe end bevelling
Mechanical Expansion
Hydrostatic pipe testing
Our Advantages For ERW/LSAW Steel Pipe
Our Advantages As Your ERW/LSAW Steel Pipe Manufacturer
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01.
Fast Delivery
Our two factory areas, 16 production lines and multi -specifications of circular production. Fastest delivery time 7 days.
Good Quality
Complete quality inspection process and inspection equipments, each steel pipe has a unique code can be traced.
Complete Specifications
Out diameter up to 1422mm, and wall thickness up to 100mm, length up to 18 meters, it can cover the needs of most projects.
Complete Certificate
API 5L, ISO9001, ISO14001, ISO18001, FPC, etc. While ensuring product quality, it can help you get more orders.
Accept Small Quantity Order
Tens of thousands of tons of steel pipe inventory can meet your minimum 1 steel pipe needs.
Quick Quotation
Dozens of professional salesmen are responsible for customers in different regions, and can provide accurate quotes within as soon as 1 hour.
Fast Delivery
Our two factory areas, 16 production lines and multi -specifications of circular production. Fastest delivery time 7 days.
Good Quality
Complete quality inspection process and inspection equipments, each steel pipe has a unique code can be traced.
Complete Specifications
Out diameter up to 1422mm, and wall thickness up to 100mm, length up to 18 meters, it can cover the needs of most projects.
Complete Certificate
API 5L, ISO9001, ISO14001, ISO18001, FPC, etc. While ensuring product quality, it can help you get more orders.
Accept Small Quantity Order
Tens of thousands of tons of steel pipe inventory can meet your minimum 1 steel pipe needs.
FAQs
Frequently Asked Questions
Here are some common questions and answers. If you still have questions, don’t hesitate to contact us.
1. Who Are We?
We, Hebei Longma Steel Pipe Manufacturing Co., Ltd is one of China leading ERW/LSAW steel pipes manufacturer, found in 2003, with more than 360 employees, 200000 ㎡ of plant.
2. What international certificates do you have?
We have API 5L (No. 5L-0685, Expiration date: 16th, Nov 2024), ISO9001, ISO14001, ISO18001, FPC. Etc.
3. What specifications of steel pipe can you produce?
We produce ERW steel pipes with Outer diameter: 60.3-660.4mm (2″-26″), and LSAW steel pipes with Outer diameter 609.6-1422mm (24″-56″), wall thickness 2.77-50mm.
4. What standard & grade steel pipes do you produce?
API 5L line pipe: PSL1 & PSL2, Grade: .B, X42, X46, X52, X56, X60, X65, X70, X80;
ASTM A53 ERW pipe: GR.B;
AS/NZS 1163 hollow section: C250/L0, C350/L0, and C450/L0;
ASTM A252 steel pipe pile: GR.1, GR.2, GR.3;
ASTM A500 structure pipe: GR.A, GR.B, GR.C, GR.D;
ASTM A691 EFW pipe: 1Cr, 1-1/4Cr, 2-1/4Cr at Class 22;
EN10219/EN1021 structure steel pipe: S235JR, S235J0H, S235J2H, S355JRH, S355J0H, S355J2H5. How do you guarantee the quality of steel pipes?
1>Strictly comply with contract requirements, pipe quality completely in accordance with national or international quality standards.
2>Make sure our pipe products with fully production processes, covers all the testings with referred standards, MPS and ITP, any defects on the pipe will be not allowed for the delivery.
3>Material with fully trace-ability, every single of product is shipped with Mill Test Certificate, and other certificates issued by the quality supervision department to prepare for verification and acceptance by the relevant inspection agencies.
4>If the delivered pipe products with defects or not complied the technical requirement specified in the contract, we will replace immediately and unconditionally. In the process of installation and trial operation, in case any quality problems, we will deal with the problems first, then find the causes and clarify the responsibilities, to make sure the project schedule and end user needs as the plan.
5>In case we are handling transportation, loading and unloading, if there are any accidents, we will replace and repair the supplied pipe materials as soon as possible according corresponding until client is satisfied.
6>During the construction process of steel pipe products and the quality problems found in the future operation of the products, if it is our reason, we will bear the responsibility and compensate the direct economic losses suffered by the demand side.6. What is your best delivery time:
15-20 days. We have close cooperation with many steel plate Stockholders, and we can deliver the steel pipes in 15-20 days when the steel plates in stock.
7. What payment methods do you accept?
T/T: 30% as deposit, 70% before shipment; L/C: 100% LC at sight.
8. What trade terms do you offer?
FOB, CFR, CIF, CIP…
Featured Case for ERW/LSAW Steel Pipe
API 5L PSL2 X70M LSAW pipe
- Size: 914.4*22.23*12000MM
- Country: Agentina
- Client say: This is not our first cooperation, Longma’s product quality and service has always been very good, which is the reason why we continue to cooperate.
APL 5L PSL1 B LSAW pipe
- Size: 813*10mm
- Country: Georgia
- Client say: The delivery time I asked for was very short, but they always finished on time. They have very strong organizational and coordination skills.
EN10210 S355J2H Hollow Section
- Size: 815mm*100mm
- Country: Poland
- Client say: The steel pipes I purchased are used for equipment manufacturing and special engineering, which have extremely strict requirements for product quality. The production process has been tracked by a third-party company of BV. At present, our cooperation is very happy and there are no quality problems.
ASTM A691 1-1/4Cr Cl22 EFW steel pipe
- Size: 508*20.62mm
- Country: Singapore
- Client say: Although our order quantity is not large, Longma has been very diligent to help us complete the production and provide relevant documents.
How Can We Help?
SLW’s experienced engineers are here to guide you through every critical step in your DC Gear Motors.
Please do not hesitate to contact us.
Driect Email: shirleen@sinlianwei.com.cn
