• Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe System 1
  • Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe System 2
  • Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe System 3
Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe

Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe

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26 m.t.
Supply Capability:
7000 m.t./month

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1、Structure of  Steel Gas Pipe   API SPEC 5CT:

Steel Gas Pipe  is to be used for conveying gas, water, and petroleum foroil and natural gas industries. And used for structural steel pies purpose. As the manufacturing process does not include any welding, seamless pipes are perceived to be stronger and more reliable. Historically seamless pipe was regarded as withstanding pressure better than other types, and was often more easily available than welded pipe. 


2、‍‍Main Features of Steel Gas Pipe  API SPEC 5CT:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price  


3、Steel Gas Pipe  API SPEC 5CT: Specification:



ASTM A106-2006, ASTM A53-2007


10#-45#, 16Mn

10#, 20#, 45#, 16Mn


8 - 33 mm

Section Shape


Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not



Hydraulic Pipe


Cold Drawn



‍Surface Treatment

factory state or painted black

‍Special Pipe

API Pipe

Alloy Or Not




Outer Diameter



20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B




1) Material:20#(ASTM A 106/A53 GRB.API5LGRB,GB),45#,16Mn,10#.

2) Specification range:OD:21.3-610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing. 


4、Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT


5、FAQ of Steel Gas Pipe  API SPEC 5CT:  

①How is the quality of your products?
    Our products are manufactured strictly according to national and internaional standard, and we take a test 
on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

②How about price?
    Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
    Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.


6、‍‍ Steel Gas Pipe  API SPEC 5CT: Images: ‍‍


Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe

Steel Gas Pipe gas Steel Pipe Seamless Steel Gas Pipe


Q:What are the industries that commonly use steel pipes?
Some of the industries that commonly use steel pipes include oil and gas, construction, manufacturing, automotive, infrastructure, water treatment, and plumbing.
Q:How do you calculate the pipe pressure loss coefficient for steel pipes?
To determine the pressure loss coefficient for steel pipes, one can utilize the widely accepted Darcy-Weisbach equation. This equation calculates the pressure loss in pipes caused by friction. It can be represented as follows: ΔP = f × (L/D) × (V^2/2g) In this equation: - ΔP represents the pressure loss in units of pressure, such as psi or Pa. - f denotes the Darcy friction factor, a dimensionless value. - L signifies the pipe length in units of length, such as feet or meters. - D represents the pipe diameter in units of length, such as feet or meters. - V indicates the fluid velocity flowing through the pipe in units of velocity, such as ft/s or m/s. - g represents the acceleration due to gravity in units of acceleration, such as ft/s² or m/s². The Darcy friction factor (f) is a dimensionless parameter that quantifies the amount of frictional resistance in the pipe. For steel pipes, this factor can be determined using the Moody diagram. The Moody diagram presents a graphical relationship between the Reynolds number (Re) and the friction factor (f) for various pipe roughness values. To calculate the pressure loss coefficient, one should find the friction factor (f) value based on the Reynolds number (Re) and the relative roughness of the steel pipe (ε/D). The Reynolds number is calculated as follows: Re = (ρ × V × D) / μ In this equation: - ρ represents the fluid density in units of mass per unit volume, such as lb/ft³ or kg/m³. - V denotes the fluid velocity in units of velocity, such as ft/s or m/s. - D signifies the pipe diameter in units of length, such as feet or meters. - μ represents the dynamic viscosity of the fluid in units of force per unit area per unit time, such as lb/ft·s or kg/m·s. Once the Reynolds number (Re) and the relative roughness (ε/D) are determined, one can refer to the Moody diagram to find the corresponding friction factor (f). The pressure loss coefficient (K) can then be calculated using the following formula: K = f × (L/D) In this equation: - L represents the pipe length in units of length, such as feet or meters. - D denotes the pipe diameter in units of length, such as feet or meters. By utilizing the Darcy-Weisbach equation and the Moody diagram, one can accurately calculate the pressure loss coefficient for steel pipes. This calculation is crucial for the design and analysis of fluid flow systems.
Q:What are the safety considerations when working with steel pipes?
There are several crucial safety considerations to bear in mind when working with steel pipes. To begin with, it is imperative to wear the appropriate personal protective equipment (PPE). This includes safety glasses or goggles to shield the eyes from debris or sparks, gloves to protect the hands from sharp edges or hot surfaces, and steel-toed boots to safeguard the feet from falling objects or heavy equipment. Additionally, it is advisable to wear a hard hat to shield the head from potential falling objects or hazards overhead. Moreover, one must be mindful of the weight and size of the steel pipes. Handling heavy pipes can strain the back and muscles, so it is essential to utilize proper lifting techniques and seek assistance when necessary. The use of lifting equipment, such as cranes or forklifts, can also help prevent injuries associated with heavy lifting. Another safety consideration is the risk of cuts or punctures. Steel pipes may have sharp edges or burrs, so it is important to handle them with care and wear suitable gloves to minimize the risk of injury. It is also recommended to inspect pipes for any defects or sharp edges before working with them. Furthermore, working with steel pipes may involve welding or cutting, which can generate sparks, heat, and fumes. It is vital to work in a well-ventilated area or employ proper ventilation equipment to ensure the elimination of harmful gases or fumes. Fire safety precautions, such as having fire extinguishers nearby and adhering to proper procedures for hot work, should also be taken. Lastly, one must be aware of potential hazards associated with working at heights or in confined spaces. When working on elevated platforms or scaffolding, fall protection measures, like safety harnesses or guardrails, should be in place. In confined spaces, proper ventilation and monitoring for hazardous gases are essential to prevent asphyxiation or exposure to toxic substances. By adhering to these safety considerations and following proper procedures, the risk of accidents or injuries when working with steel pipes can be significantly reduced.
Q:How are steel pipes used in the manufacturing of sewage treatment plants?
Steel pipes are commonly used in the manufacturing of sewage treatment plants for various purposes such as conveying wastewater, transporting chemicals and gases, and facilitating the distribution of treated water. They provide durability, corrosion resistance, and structural stability necessary for the efficient and reliable operation of sewage treatment processes.
Q:Can steel pipes be used for marine applications?
Yes, steel pipes can be used for marine applications.
Q:What are the different types of steel pipe fittings for industrial applications?
There are several different types of steel pipe fittings commonly used in industrial applications. These include elbows, tees, couplings, unions, reducers, flanges, and caps. Each of these fittings serves a specific purpose in connecting and directing the flow of fluids or gases within a piping system.
Q:Can steel pipes be used for firefighting systems?
Yes, steel pipes can be used for firefighting systems. Steel pipes are commonly used for their durability, strength, and resistance to high pressure and heat. They can effectively transport water or other fire suppressants to extinguish fires efficiently, making them a reliable choice for firefighting systems.
Q:RC is it welded steel pipe or galvanized steel pipe?
RC pipe is galvanized steel pipe, usually followed by the diameter, such as RC50, that is, 50mm galvanized steel pipe.
Q:How are steel pipes protected against abrasive wear?
Steel pipes are protected against abrasive wear through various methods such as lining the interior of the pipes with abrasion-resistant materials, applying protective coatings on the pipe surface, or using ceramic tiles or liners. These measures help minimize the effects of friction and abrasion, ensuring the longevity and durability of the steel pipes.
Q:What are the different types of steel pipe coatings?
There are several different types of steel pipe coatings, including epoxy coatings, polyethylene coatings, zinc coatings, and galvanized coatings. These coatings are applied to steel pipes to protect them from corrosion and extend their lifespan.

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