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High-precision honed tubes are advanced steel pipes manufactured through cold drawing/hot rolling combined with honing technology. With inner bore accuracy up to H8-H9 and surface roughness ≤Ra0.4μm, they are widely used in hydraulic cylinders, pneumatic cylinders, and coal mine supports. Key features include dimensional stability, superior mechanical properties, and high-pressure resistance, enhancing equipment lifespan and efficiency.

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product details

Product Tags

Product details

Seamless steel pipe
Material	API 5L：A B X42 X52 X60 X65 API 5CT：H40 J55 K55 N80 L80 C90 P110 API 5DP :E75 X95 G105 S135
Surface	Coated/galvanized/black
Technique	Hot rolled/cold rolled /cold drawn /seamless/honed
Dimension	Ranging from 1/2 inch to 36 inches and above.
Length:	Random lengths (R/L) or single random lengths (SRL), typically ranging from 18 to 24 feet.
Application	Oil/gas pipe ,aerospace use,machine parts ,furnace ,geological exploration,acid resistance ,bearing

Normal sizes

Outside Diameter			Thickness
			SCH10	SCH40	XS	SCH80	SCH160	XXS
DN15	1/2"	21.3mm	2.11mm	2.77mm	3.73mm	3.73mm	4.78mm	7.47mm
DN20	3/4"	26.7mm	2.1lmm	2.87mm	3.91mm	3.91mm	5.56mm	7.82mm
DN25	I"	33.4mm	2.77mm	3.38mm	4.55mm	4.55mm	6.35mm	9.09mm
DN32	1-1/4"	42.2mm	2.77mm	3.56mm	4.85mm	4.85mm	6.35mm	9.7mm
DN40	1-1/2"	48.3mm	2.77mm	3.68mm	5.08mm	5.08mm	7.14mm	10.15mm
DN50	2"	60.3mm	2.77mm	3.91mm	5.54mm	5.54mm	8.74mm	11.07mm
DN65	2-1/2"	73mm 76mm	3.05mm	5.16mm	7.01mm	7.01mm	9.53mm	14.02mm
DN80	3"	88.9mm	3.05mm	5.49mm	7.62mm	7.62mmmm	11.13mm	15.25mm
DN90	3-1/2"	101.6mm	3.05mm	5.74mm	8.08mm	8.08mm
DN100	4"	114.3mm	3.05mm	6.02mm	8.56mm	8.56mm	13.49mm	17.12mm
DN125	5"	141.3mm	3.4mm	6.55mm	9.53mm	9.53mm	15.88mm	19.05mm
DN150	6"	168.3mm 165mm	3.4mm	7.1lmm	10.97mm	10..97mm	18.26mm	21.95mm
DN200	8"	219.1mm	3.76mm	8.18mm	12.7mm	12.7mm	23.01mm	22.23mm
DN250	10"	273.1mm	4.19mm	9.27mm	12.7mm	15.09mm	28.58mm	25.4mm

Features of API Seamless Steel Pipe

1.Petroleum and chemical industry

◦Oil and gas transmission pipelines (onshore and offshore oil fields)

◦Chemical medium transportation pipes (acids, alkalis, solvents)

◦Refinery and chemical plant process pipelines, reactor pipelines

◦Storage tank connecting pipes and pressure vessel accessories

2.Mechanical manufacturing industry

◦Precision parts processing (shafts, sleeves, bearings)

◦Hydraulic and pneumatic system pipelines

◦Construction machinery (excavators, cranes) structural pipes and hydraulic pipes

◦Automobile, ship, and aircraft engine accessories

3.Construction and municipal engineering

◦Building water supply and drainage, heating, and gas transmission pipelines

◦High-rise building fire-fighting pipelines and sprinkler systems

◦Municipal water supply and drainage networks, natural gas pipelines

◦Bridge and tunnel support structure pipes

4.Electric power engineering

◦Boiler water wall pipes, superheater pipes, and reheater pipes

◦Steam transmission pipelines in thermal power plants

◦Nuclear power plant pressure-bearing pipelines and auxiliary system pipes

5.Other fields

◦Medical equipment (stainless steel seamless pipes for medical devices)

◦Food processing industry (hygienic grade seamless pipes)

◦Aerospace and military industry (high-precision, high-temperature resistant pipes)

◦Geothermal and solar energy utilization pipelines

Packaging and Shipping

1.Manner of packing：

①Standard bundling: Suitable for short-distance transportation and general-purpose seamless steel pipes. Use high-strength steel belts or plastic belts to bundle 10-20 pieces per bundle (adjusted according to pipe diameter), with each bundle weighing 1-3 tons. Mark the product model, material, length, and batch number clearly.

②Protective packaging：

◦Both ends of the pipe are covered with plastic caps or steel caps to prevent internal contamination and collision damage.

◦The surface is wrapped with moisture-proof film or anti-rust paper, and sprayed with anti-rust oil for long-distance transportation or storage.

◦High-value or corrosion-sensitive products (stainless steel pipes) are packed in wooden crates or iron frames, with moisture-proof agents added to ensure storage and transportation safety.

2.Mode of transportation：

①Road：Use heavy-duty trucks with a load capacity of 30-50 tons, suitable for short-distance transportation within 500 kilometers. Flexible scheduling, short transportation time, and suitable for small-batch and urgent orders.

②Railway：Transport via special railway freight lines, suitable for long-distance transportation over 500 kilometers. Large transportation capacity, low cost, and suitable for large-scale orders.

③Sea transportation：

◦Container transportation: Suitable for small-batch, high-value products, using 20-foot or 40-foot containers to avoid damage during transportation.

◦Bulk cargo shipping: Suitable for large-scale orders (over 100 tons), directly loaded into bulk cargo ship holds to reduce transportation costs.

◦Port services: Provide loading services at major ports such as Tianjin Port, Shanghai Port, Qingdao Port, and Guangzhou Port, supporting trade terms such as FOB, CIF, and CFR.

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1.Q：Does the product comply with international standards? Can you provide the relevant certifications?

A：Our seamless steel pipes comply with Chinese national standards (GB/T 8163, GB/T 3087, etc.) and can be produced according to international standards such as API 5L (USA), ASTM A53 (USA), DIN 2391 (Germany), and JIS G3454 (Japan) as required. We can provide material certificates (MTC), SGS test reports, ISO9001 quality management system certification, and API certification (for oil and gas pipes) to meet foreign trade customs clearance needs.

2.Q：What is the minimum order quantity (MOQ)? Can sample orders be accepted?

A：The minimum order quantity for regular specifications is 5 tons, and for special customized specifications (non-standard diameter, wall thickness, or material), it is 20 tons. We support sample orders, with sample weight usually 1-2 pieces (about 50-150kg). The sample cost can be deducted from subsequent bulk orders, and the sample shipping fee is borne by the customer.

3.A：How long is the production cycle? How can we ensure the delivery time?

A：The production cycle for regular specifications is 7-12 days, and for special customized specifications, it is 15-25 days. We have 4 professional seamless steel pipe production lines with a daily output of 800 tons, and maintain sufficient raw material safety stock to avoid production disruptions. For urgent orders, we can arrange priority production to ensure on-time delivery.

4.Q：What are the payment methods available? Can a letter of credit be accepted?

A：Supported payment methods include: T/T (telegraphic transfer, 30% advance payment + 70% payment upon receipt of bill of lading copy)

5.Q：Does the product support customization? Which parameters can be customized?

A：Full customization is supported. Customizable parameters include: outer diameter (10mm-630mm, special specifications up to 1000mm), wall thickness (1.5mm-50mm), material (carbon steel, alloy steel, stainless steel, high-strength steel), length (customizable up to 24m), surface treatment (galvanizing, painting, anti-corrosion coating), executive standards (national/international standards), and identification language (English, Japanese, Korean, etc.).

6.Q：How to resolve disputes over product quality?

A：We promise to provide products that meet the standards stipulated in the contract. If the customer finds quality issues (dimensional deviation, mechanical property non-compliance, corrosion, etc.) after receiving the goods, they must raise the issue within 7 days of receipt and provide relevant test reports and photo evidence. We will send professional technical personnel to verify the situation within 3 working days. If it is confirmed to be our responsibility, we will provide free replenishment, return, or compensation services to protect the customer's legitimate rights and interests.

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