Casing, Drill, Oil, Ship, Structure, Fluid and Pressure Boiler Seamless Steel Pipes
1．Product Overview
Seamless steel pipes are widely used in pressure boiler systems, oil and gas transportation, drilling operations, shipbuilding, structural engineering, and industrial fluid transmission.
The product range includes alloy pipes, boiler pipes, petroleum cracking pipes, fluid pipes, structure pipes, oil casing pipes, and drill pipes.
Multiple international standards and steel grades are available for different operating environments and pressure requirements.
2．Technical Solution
The pipes are manufactured according to API, ASTM, DIN, JIS, and GB standards for high-pressure, high-temperature, structural, and transportation applications.
Different material grades are selected according to service conditions:
Alloy steel pipes for high-temperature and pressure systems
Boiler pipes for heat exchange and steam applications
Pipeline pipes for oil and gas transportation
Drill and casing pipes for oilfield operations
Structural pipes for mechanical and construction use
The available diameter and wall thickness ranges support different pressure-bearing capacities and engineering requirements.
3．Specifications
| Parameter |
Value |
| Product Type |
Seamless Steel Pipe |
| Standard |
API 5L / ASTM A335 / ASTM A213 / GB5310 / GB/T8162 / GB/T8163 / API 5CT / API 5D |
| Length |
5.8M / 6M or customized |
| Diameter Range |
∮6mm – ∮824mm |
| Wall Thickness Range |
1.5mm – 90mm |
| MOQ |
50 MT per size |
| Packing |
Nude packing or standard export packing |
| Delivery Time |
45 days |
| Payment Terms |
T/T or Irrevocable L/C |
4．Product Categories
| Pipe Type |
Main Material |
Standard |
Size Range |
Application |
| Alloy Pipe |
P5/T5, P11, P22, T91 |
ASTM A335 / GB5310 / DIN17175 |
∮16-426×2-90mm |
High temperature and pressure service |
| High Pressure Boiler Pipe |
20G, 12Cr1MoVG, 15CrMoG |
GB5310 |
∮16-824×2-65mm |
High pressure boiler systems |
| Petroleum Cracking Pipe |
20, 1Cr5Mo, 15CrMo |
GB9948 |
∮10-530×1.5-36mm |
Petroleum refinery and heat exchange |
| Chemical Fertilizer Pipe |
20, 16Mn, 12Cr2Mo |
GB6479 |
∮25-426×6-40mm |
Chemical fertilizer equipment |
| Low Pressure Boiler Pipe |
10, 20 |
GB3087 |
∮10-426×2-40mm |
Boiler heating systems |
| Fluid Pipe |
20, Q345 |
GB/T8163 |
∮8-610×1.5-40mm |
Fluid transportation |
| Structure Pipe |
20, 45, 40Cr, Q345 |
GB/T8162 |
∮6-610×1.5-40mm |
Structural engineering |
| Pipeline Pipe |
B, X42, X52 |
API 5L |
∮40-325×3-40mm |
Oil and gas transportation |
| Hydraulic Cylinder Pipe |
20, 45, 27SiMn |
GB/T17396 |
∮70-377×12-40mm |
Hydraulic systems |
| Ship Pipe |
360, 410 |
GB/T5312 |
∮14-426×2-45mm |
Shipbuilding |
| Oil Pipe |
J55, K55, N80, L80, P110 |
API 5CT |
∮60-114×4-12mm |
Oil transmission |
| Drill Pipe |
E75, X95, G105, S135 |
API 5D |
∮60-139×6-13mm |
Oil well drilling |
| Casing Pipe |
J55, K55, N80, L80, P110 |
API 5CT |
∮114-273×4-13mm |
Oil well casing |
5．Application
These seamless steel pipes are suitable for:
- Oil and gas transmission
- Pressure boiler systems
- Petroleum refining
- Chemical fertilizer equipment
- Shipbuilding engineering
- Hydraulic systems
- Industrial fluid transportation
- Steel structures and machinery
- Oil drilling and casing operations
6．Processing
The pipes can be supplied in fixed lengths of 5.8M and 6M or customized according to project requirements.
Surface protection, marking, cutting, beveling, threading, bundling, and export packing can be arranged before shipment.
7．Advantages
- Wide range of international standards and steel grades
- Suitable for high-pressure and high-temperature environments
- Available for structural, pipeline, drilling, and boiler applications
- Multiple diameter and wall thickness combinations available
- Suitable for industrial, offshore, energy, and engineering projects
- Standard export packing supports international shipment
8．How to Choose
- Select alloy pipes for high-temperature and pressure service.
- Choose API 5L pipes for oil and gas transportation systems.
- Choose API 5CT casing and tubing for oilfield projects.
- Select GB/T8162 structure pipes for mechanical and construction applications.
- Confirm operating pressure, temperature, diameter, wall thickness, and material grade before ordering.
9．FAQ
Q1．What standards are available
The pipes are available according to API, ASTM, DIN, JIS, and GB standards.
Q2．What industries use these pipes
They are widely used in oil and gas, power plants, petrochemical plants, shipbuilding, boiler systems, and structural engineering.
Q3．What pipe lengths are available
Standard lengths are 5.8M and 6M. Customized lengths are also available.
Q4．Can the pipes be supplied for drilling applications
Yes. Drill pipes and casing pipes are available according to API 5D and API 5CT standards.
Q5．Can customized dimensions be produced
Yes. Diameter, wall thickness, length, and pipe processing can be customized according to project requirements.
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Casing, Drill, Oil, Ship, Structure, Fluid and Pressure Boiler Seamless Steel Pipes Images
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