Precision steel pipe fittings and flanges in a modern production facility
Pipeline components since 2005

Built for pressure.
Made to endure.

Industrial pipe, fittings and flanges manufactured for critical energy, petrochemical and infrastructure projects worldwide.

20+Years of manufacturing
125,000m² manufacturing base
40,000Tons annual capacity
321Skilled employees

Proven supply credentials

Supplier to China's three major energy groups.

CNPCChina National Petroleum
SINOPECChina Petrochemical
CNOOCChina National Offshore Oil

Product center

A complete range
for pipeline projects.

From core pressure-piping components to flexible products, supports and coordinated pipe supply, Longrun provides one accountable source for project requirements.

View all products and size capability
01

Butt-Weld Pipe Fittings

Formed and fabricated fittings for pressure piping systems and demanding project service.

  • Elbows
  • Tees & crosses
  • Concentric & eccentric reducers
  • Caps & formed heads
View products & sizes
02

Pipe Bends

Large-diameter and project-specific bends produced to drawing, radius and angle requirements.

  • Long-radius bends
  • Seamless & welded construction
  • Custom radius & angle
  • Large sizes up to DN2000
View products & sizes
03

Forged Flanges

Standard and customized forged connection components for industrial piping packages.

  • Weld neck flanges
  • Slip-on flanges
  • Blind flanges
  • Socket weld & threaded flanges
View products & sizes
04

Expansion & Flexible Products

Flexible metallic products engineered to accommodate movement and connection requirements.

  • Metal bellows expansion joints
  • Metal hoses
  • Flexible connection assemblies
  • Made-to-drawing configurations
View products & sizes
05

Supports & Prefabrication

Factory-fabricated components and assemblies prepared for efficient project installation.

  • Pipe supports
  • Pipe hangers
  • Pipe spools
  • Prefabricated piping assemblies
View products & sizes
06

Steel Pipe Supply

Coordinated pipe supply for complete project packages and matched component delivery.

  • Seamless steel pipe
  • Welded steel pipe
  • Carbon, alloy & stainless steel
  • Project package supply
View products & sizes
DN2000Large-diameter bends
DN700Seamless tees
DN600Seamless stainless elbows

Materials: carbon steel, alloy steel and stainless steel

Standard products and made-to-drawing project components

Manufacturing confidence

Engineering certainty into every connection.

Founded in 2005 in Yanshan, Hebei, Longrun operates a 125,000 m² manufacturing base with 321 employees and an annual production capacity of approximately 40,000 tons.

Longrun is a supplier to CNPC, SINOPEC and CNOOC, with pipeline products serving major energy projects.

Integrated production

Forming, machining, heat treatment and testing coordinated under one system.

80+ testing units

Chemical, mechanical, hydrostatic and non-destructive testing across the production cycle.

International supply

Export experience across Southeast Asia, South Africa and Europe.

Qualified personnel

A 321-person team supported by engineers, technicians and licensed specialists.

Production capabilities

Hot forming & cold forming01
CNC machining02
Heat treatment03
NDT & laboratory testing04
Surface treatment & coating05
Discuss your project

Verified qualifications

Certified for critical applications.

Our management systems and manufacturing capabilities are independently assessed for global energy, pressure equipment and marine projects.

API Spec Q1 certificate for Hebei Longrun Pipeline Group
API Q1

API Spec Q1

Quality management system for the manufacture and sale of seamless pipe fittings.

Registration Q1-3309 · Valid through Mar 2029

PED material quality assurance certificate for Hebei Longrun Pipeline Group
CE / PED

Pressure Equipment

Material quality assurance for butt-weld fittings and forged flanges under PED 2014/68/EU.

Certificate 03270/5/2025-CERT-01 · Valid through Feb 2028

China Classification Society works approval certificate for pipe fittings
CCS

Works Approval

China Classification Society works approval for steel pipe fittings intended for ships.

Certificate QH24PWA00038 · Valid through Feb 2030

ISO 14001 environmental management system certificate
ISO 14001

Environmental Management

Environmental management system covering pipe fittings, forged flanges, expansion joints and pipe supports.

ISO 14001:2015 · Valid through Jun 2029

ISO 45001 occupational health and safety management system certificate
ISO 45001

Occupational Health & Safety

Occupational health and safety management system for the principal manufacturing scope.

ISO 45001:2018 · Valid through Jun 2029

Products manufactured to international specifications

ASME
ASTM
EN
DIN
GOST
JIS

Selected project references

Proven across critical industries.

A selection of international and domestic supply experience across power, nuclear, steel, oil & gas and renewable energy projects.

01United Arab Emirates

Dubai 950 MW CSP-PV Hybrid Power Plant

Renewable Energy

Pipe fittings

02Bangladesh

Rupsha 800 MW Combined-Cycle Power Plant

Power Generation

Pipe fittings

03Pakistan

ThalNova 1 × 330 MW Mine-Mouth Power Plant

Power Generation

Pipe fittings

04Indonesia

Indonesia Dexin Steel — Phase I Coking Plant

Steel & Coking

Stainless steel pipe fittings

05China

Dalian Hongyanhe Nuclear Power Plant Phase II

Nuclear Power

Corrosion-resistant pipes and pipe fittings

06China

Changjiang Nuclear Power Project

Nuclear Power

RCC-M grade pipe fittings

07China

Mabidong Coalbed Methane Field Surface Facilities

Oil & Gas

Pipes, fittings and flanges

08China

CNOOC Equipment Manufacturing Project

Offshore Energy

Seamless steel pipes and pipe fittings

Project titles and supply scopes are translated from company qualification records. Contract values, quantities and commercially sensitive details are intentionally omitted.

Frequently asked questions

Clear answers for confident sourcing.

Explore 50 practical answers covering Longrun, product capabilities, materials, quality control and project ordering.

01

Company Information

10 questions
01Who is Hebei Longrun Pipeline Group?

Hebei Longrun Pipeline Group is a China-based manufacturer and project supplier of pipe fittings, forged flanges, pipe bends and other pipeline components.

02When was Longrun established?

Longrun was established in 2005.

03Where is the company located?

The company is located in Yanshan County, Cangzhou, Hebei Province, one of China's major pipeline-equipment manufacturing centers.

04How large is Longrun's manufacturing base?

Longrun operates a manufacturing base covering approximately 125,000 square meters.

05What is Longrun's annual production capacity?

The company has an annual production capacity of approximately 40,000 tons.

06How many people work at Longrun?

Longrun has approximately 321 employees, including engineers, technicians, production specialists and qualified inspection personnel.

07Which major energy companies has Longrun supplied?

Longrun is a supplier to CNPC, SINOPEC and CNOOC.

08Does Longrun have international project experience?

Yes. Longrun has supplied products to projects in Southeast Asia, South Asia, the Middle East, South Africa and Europe.

09Which industries does Longrun serve?

Longrun serves oil and gas, petrochemical, power generation, nuclear power, marine, steel, mining, infrastructure and municipal pipeline projects.

10Does Longrun work with EPC contractors?

Yes. Longrun supports EPC contractors with standard products, customized components and complete project piping packages.

02

Products & Capabilities

10 questions
11What are Longrun's principal products?

The product range includes pipe fittings, pipe bends, forged flanges, expansion joints, metal hoses, pipe supports, prefabricated piping assemblies and steel pipe supply.

12What types of butt-weld fittings are available?

Longrun supplies elbows, tees, crosses, reducers, caps, formed heads and other made-to-drawing butt-weld fittings.

13What types of elbows can Longrun manufacture?

Longrun manufactures seamless and welded elbows in carbon steel, alloy steel and stainless steel.

14Can Longrun manufacture tees and crosses?

Yes. Equal tees, reducing tees and crosses can be produced according to the required material, dimensions and standard.

15What types of reducers are available?

Longrun supplies concentric and eccentric reducers for industrial piping systems.

16Does Longrun manufacture pipe caps and formed heads?

Yes. Pipe caps, end caps and formed heads can be manufactured according to standard or project-specific requirements.

17Can Longrun manufacture custom pipe bends?

Yes. Pipe bends can be produced according to the required diameter, wall thickness, radius, angle, material and drawing.

18What is the maximum size for large-diameter bends?

Longrun's equipment supports the production of large-diameter bends up to DN2000, subject to material and technical evaluation.

19What is the maximum size for seamless tees?

Longrun can manufacture seamless tees up to DN700, subject to wall thickness, material and specification.

20Can Longrun manufacture seamless stainless steel elbows?

Yes. Longrun has production capability for seamless stainless steel elbows up to DN600, subject to technical requirements.

03

Product Range & Materials

10 questions
21What types of forged flanges are available?

Available flange types include weld neck, slip-on, blind, socket-weld, threaded and customized forged flanges.

22Does Longrun manufacture expansion joints?

Yes. Longrun produces metal bellows expansion joints and customized expansion components.

23Are metal hoses available?

Yes. Metallic flexible hoses and related connection assemblies are included in Longrun's product range.

24Can Longrun supply pipe supports and hangers?

Yes. Longrun manufactures pipe supports, hangers and customized supporting components.

25Does Longrun provide pipe spool fabrication?

Yes. Pipe spools and factory-prefabricated piping assemblies can be produced according to approved drawings.

26Can Longrun supply steel pipes?

Yes. Longrun can coordinate the supply of seamless and welded steel pipes as part of a complete project package.

27Which materials does Longrun work with?

The principal material categories are carbon steel, alloy steel and stainless steel.

28Can Longrun manufacture non-standard products?

Yes. Custom products can be manufactured according to customer drawings, samples, data sheets or project specifications.

29Can different products be combined into one package?

Yes. Pipes, fittings, flanges, supports and fabricated components can be coordinated under one project package.

30Does Longrun supply both standard and project-specific products?

Yes. The company supports standard products, special dimensions and fully customized project components.

04

Standards & Quality

10 questions
31Which international standards can Longrun follow?

Products can be manufactured according to applicable ASME, ASTM, EN, DIN, GOST and JIS requirements.

32Can products be manufactured according to customer specifications?

Yes. Customer specifications can be reviewed together with the applicable product standard and drawings.

33Does Longrun hold API certification?

Yes. Longrun holds API Spec Q1 certification for its quality-management system within the certified manufacturing scope.

34Does Longrun have CE/PED certification?

Yes. Longrun holds CE/PED certification covering applicable butt-weld fittings and forged flanges.

35Does Longrun hold marine approval?

Yes. Longrun holds CCS Works Approval for applicable steel pipe fittings intended for ship applications.

36Which management-system certificates does Longrun hold?

Longrun holds ISO 14001 environmental-management and ISO 45001 occupational health and safety certifications.

37How does Longrun control material traceability?

Materials are controlled through identification, documentation and inspection throughout the manufacturing process.

38What testing capabilities are available?

Testing capabilities include chemical analysis, mechanical testing, impact testing, tensile testing, hydrostatic testing and dimensional inspection.

39Which non-destructive testing methods are available?

Available NDT methods include ultrasonic, radiographic, magnetic-particle and liquid-penetrant testing, depending on product requirements.

40Can third-party inspection be arranged?

Third-party inspection can be coordinated when required by the customer or project specification.

05

Quotations & Delivery

10 questions
41What quality documents can be provided?

The documentation package can include material certificates, inspection records, test reports, dimensional reports and other agreed quality documents.

42Can Longrun prepare a project-specific inspection plan?

Yes. Inspection and test requirements can be reviewed and agreed before production.

43What information is required for a quotation?

Please provide the product description, material grade, standard, size, wall thickness or schedule, quantity, inspection requirements and delivery destination.

44Can Longrun review drawings before quotation?

Yes. The engineering team can review drawings and technical requirements before confirming manufacturability and pricing.

45Does Longrun accept trial orders?

Trial orders can be considered after reviewing the product, quantity, material and production requirements.

46What is Longrun's minimum order quantity?

Minimum order quantities depend on the product type, material, size and manufacturing process. Please contact the sales team for confirmation.

47How is the production lead time determined?

Lead time depends on product type, material availability, quantity, testing requirements and the agreed delivery schedule.

48Can Longrun support urgent project requirements?

Urgent requirements can be evaluated against material availability and the current production schedule.

49Can Longrun arrange export packaging and international delivery?

Yes. Packaging, marking and international delivery requirements can be agreed for each order.

50How can customers contact Longrun?

Send your inquiry, drawings or bill of quantities to sales@longrunpipeline.com for technical and commercial review.

Start a conversation

Have a project in mind?

Send your drawings, specifications or bill of quantities to our export team.

sales@longrunpipeline.com