Key attributes about oil pipes

oil pipes Industry-specific attributes

Forme de la section	Rond
Traitement de surface	Laminés à chaud
Tolérance	±1%
Huilé ou non huilé	Non huilé
Facturation	en poids théorique

Oil pipes Autres caractéristiques

Lieu d'origine	Shandong, Chine
Alliage ou non	Non-alliage
Standard	API 5L、ASTM A106/A53、JIS G3454
Grade	Q235/Q345、API 5L X42-X80、N80
Délai de livraison	15-21 jours
Nom de la marque	Kehuan ISO 9001/API Q1 certified enterprise, with 20 years of experience in supplying oilfield pipe materials.
Application	Oil and gas transportation, drilling engineering, refining and chemical facilities It is applicable to onshore/offshore oil well casings, gas transmission trunk lines and refinery pipelines.
Tuyaux spéciaux	Tube API, autres, tube à paroi épaisse
Épaisseur	6-40mm
Longueur	12M, 6M, 6.4M,customized
Certificat	API , CE, BSI, SASO, JIS, ISO9001
Service de traitement	Découpage
Grade	ASTM A106 A53 API 5L X42-X80, N80
Application	Conduite de fluide, conduite hydraulique, conduite d'huile
Nom du produit	conduite d'huile de pétrole
Lieu d'origine	Shandong Chine
MOQ	5 tonnes
Épaisseur de la paroi	6mm-70mm
Échantillon	Disponible
Technologie	Sans soudure laminé à chaud
Matériau	10#.20# 45# 16Mn
Paiement	TT DP LC

What is oil pipes?

oil pipes (also known as an oil pipe) is a specialized pipeline used in the oil and gas industry for the transportation, extraction, and processing of petroleum products. It plays a critical role in various stages of the oil and gas supply chain, from wellheads to refineries and distribution networks.

Manufacturing Process of oil pipes

1. oil pipes Raw Material Preparation

• Sélection des matériaux:
  • High-strength carbon steel (e.g., grades 10#, 20#, 45#) or alloy steel (e.g., 16Mn) is commonly used, meeting standards like API 5L, ASTM A106, or JIS.
  • Raw materials are sourced as billets (round steel bars) with diameters ranging from 50mm to 300mm, depending on the final pipe size.
• Quality Inspection:
  • Billets undergo chemical composition analysis and ultrasonic testing to ensure no internal defects.

2. oil pipes Heating and Piercing

• Heating:
  • Billets are heated in a furnace to 1,100–1,250°C (2,012–2,282°F) to make the steel malleable.
• Piercing (Hot Roll Piercing):
  • Using a piercing mill (e.g., Mannesmann mill), a rotating mandrel pierces the heated billet from the center, forming a hollow tube (referred to as a “shell” or “bloom”).
  • The process creates the initial pipe shape with a rough inner diameter.

3. Sizing and Reducing

• Rolling Extension:
  • The shell is passed through a stretching mill or elongator to increase its length and reduce wall thickness. A mandrel is inserted inside the shell to shape the inner diameter.
• Sizing:
  • A sizing mill rolls the tube to achieve the desired outer diameter (OD) with precision. For smaller pipes, a reducing mill may further decrease the OD while maintaining wall thickness.

4. Heat Treatment

• Normalizing or Tempering:
  • Pipes are heated to 850–950°C (1,562–1,742°F) and air-cooled (normalizing) to improve mechanical properties (e.g., strength, ductility) and eliminate internal stress.
  • For high-strength grades (e.g., API 5L X65–X80), quenching and tempering (Q&T) may be used to achieve higher tensile strength.

5. Surface Treatment and Finishing

• Deburring:
  • Internal and external edges are smoothed to remove burrs from the manufacturing process.
• Cutting to Length:
  • Pipes are cut to standard lengths (e.g., 6m, 12m) or customized sizes using saws or laser cutters.
• Surface Cleaning:
  • Acid pickling or shot blasting removes rust and scale, followed by coating (e.g., epoxy, polyethylene) for corrosion resistance.

6. Quality Control Testing

• Dimension Inspection:
  • OD, wall thickness, and length are measured using calipers and laser scanners.
• Hydrostatic Pressure Test:
  • Pipes are filled with water and pressurized (e.g., up to 2,000 psi) to check for leaks.
• Non-Destructive Testing (NDT):
  • Ultrasonic testing (UT) or magnetic particle inspection (MPI) detects internal or surface defects.

Advantages of oil pipes

oil pipes offer critical benefits for energy transportation, making them the preferred choice for large-scale infrastructure:

1. High Efficiency in Long-Distance Transportation

• Continuous Flow: Pipelines enable 24/7, uninterrupted transport of large volumes (e.g., millions of barrels of oil per day), outperforming trucks or railcars in consistency.
• Low Energy Consumption: Compared to other modes (e.g., tankers or trucks), pipelines require less energy per unit of fuel transported, as fluids move via pressure or gravity.

2. Cost-Effectiveness

• Long-Term Investment: While initial construction costs are high, pipelines have a lifespan of 50+ years, reducing maintenance and replacement costs over time.
• Economies of Scale: Large-diameter pipes (e.g., 48 inches) can transport massive quantities, lowering the cost per barrel compared to fragmented transport methods.

3. Safety and Reliability

• Contained System: Sealed pipes minimize the risk of spills, leaks, or accidents compared to open transport (e.g., tanker trucks).
• Monitoring Capabilities: Modern pipelines use sensors and SCADA systems to detect leaks, pressure changes, or tampering in real time.
• Robust Design: High-strength materials and corrosion-resistant coatings ensure durability in harsh environments (e.g., extreme temperatures, seismic zones, or offshore waters).

4. Environmental Benefits (Relative to Alternatives)

• Lower Emissions: oil pipes produce fewer greenhouse gases than trucks or ships, as they rely on minimal mechanical power (e.g., pumps) and avoid repeated fuel loading/unloading.
• Reduced Land Impact: Underground pipelines occupy less surface area than roads or rail networks, minimizing habitat disruption.

5. Versatility and Scalability

• Diverse Applications: Suitable for transporting crude oil, natural gas, refined products, or even slurry (e.g., coal mixed with water).
• Expandability: Existing pipelines can be upgraded (e.g., increased pressure) or extended with branch lines, adapting to changing energy demands.

6. Strategic and Geopolitical Significance

• Energy Security: Oil pipes Pipelines provide stable, domestic energy transport, reducing reliance on volatile international markets (e.g., oil tankers vulnerable to geopolitical conflicts).
• Infrastructure Development: They support economic growth by connecting remote production areas to urban centers or export hubs.

Notre service

At Kehuan, we implement change management strategies specifically tailored to the steel industry, seamlessly integrated into our operations. Our approach not only enhances immediate client benefits but also lays the groundwork for enduring advantages within your existing steel product portfolio.Convenient Online

Une tarification transparente

Une maintenance sans souci

Spécialistes certifiés de l'industrie

Matériaux et composants authentiques

Commande en ligne pratique

Pourquoi nous ?

• Une expertise inégalée dans le domaine de l'acier
• Dédié à vos spécifications
• Matériaux de première qualité
• Processus de commande simplifié
• Livraison dans les délais, sans compromis