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16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80

16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80 photo-1
16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80 photo-2
16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80 photo-3
16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80 photo-4
16Mn Low Carbon Steel Seamless Pipe 4130 Alloy Steel OD 100mm Sch80 photo-5

Product Spotlights

High-quality 16Mn/4130 alloy steel seamless pipe with OD 100mm Sch80, offering superior strength, pressure resistance, and weldability. ISO9001 certified, customizable lengths and surface treatments, direct mill pricing with global export capability. Ideal for petroleum, chemical, and structural applications.
Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, 16Mn / 4130 Alloy Steel (optional)
Surface Treatment:
Other, Black / Varnished / Galvanized (optional)
Outer Diameter:
100mm (4 inches)
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao Port
Delivery Detail:
7 days
Material Other, 16Mn / 4130 Alloy Steel (optional)
Surface Treatment Other, Black / Varnished / Galvanized (optional)
Outer Diameter 100mm (4 inches)
Wall Thickness Sch80 (8.56mm for 4“ pipe as per standard)
Standard ASTM A106 / ASTM A519 / API 5L (available upon request)
Length 6m / 12m or custom cut
Application Petroleum, Chemical, Boiler, Structural
Certification ISO9001:2015
End Finish Plain / Beveled / Threaded

Hemaokang Steel (Shandong) Co., Ltd. is pleased to present our premium 16Mn Low Carbon Steel Seamless Pipe & 4130 Alloy Steel Seamless Pipe with an outer diameter of 100mm and Sch80 wall thickness. As a manufacturer with ISO9001 certification and an annual export value exceeding US$50 million, we ensure that every pipe meets rigorous quality standards for demanding applications in oil & gas, petrochemical, and structural industries. Our seamless pipes are produced using advanced hot-rolling or cold-drawing processes, offering superior strength, corrosion resistance, and dimensional accuracy.

The 16Mn low carbon steel grade provides excellent weldability and toughness, while the 4130 alloy steel variant delivers higher tensile strength and wear resistance for high-pressure environments. Both options are available in Sch80 wall thickness, which ensures reliable performance under extreme conditions. With our strong supply chain and experienced team of 51–100 employees, we guarantee timely delivery and customized solutions for global clients.

Key Features & Technical Specifications

  • Seamless Construction: No welded seams, reducing the risk of leakage and failure under high pressure.
  • Dual Material Options: Choose between 16Mn (low carbon) for cost-effective general use or 4130 alloy steel for enhanced strength and hardness.
  • Precise Dimensions: Outer diameter of 100mm (±0.5mm tolerance) with Sch80 wall thickness (8.56mm for 4" nominal pipe size).
  • Heat Treatment: Normalized or quenched & tempered available upon request to optimize mechanical properties.
  • Surface Finish: Black oxide, varnished, or galvanized to resist corrosion during storage and transport.
  • Custom Lengths: Standard 6m or 12m, or cut to exact requirements (minimum 1m).

Parameter 16Mn Grade 4130 Grade
Tensile Strength (MPa) 470–630 560–760
Yield Strength (MPa) ≥ 345 ≥ 435
Elongation (%) ≥ 21 ≥ 18
Hardness (HB) ≤ 197 ≤ 217
Standard Compliance ASTM A106, GB/T 8162 ASTM A519, API 5L

Product Advantages & Customer Benefits

  • High Pressure Resistance: Sch80 wall thickness provides a pressure rating approximately 1.5 times that of standard schedule 40, ideal for hydraulic and steam systems.
  • Excellent Weldability: 16Mn low carbon steel allows easy welding without preheat in most cases, saving fabrication time.
  • Wear Resistance: 4130 alloy steel offers superior abrasion resistance, extending service life in slurry and high-velocity applications.
  • Cost-Effective: Competitive pricing due to our direct mill sourcing and efficient production lines.
  • Global Logistics: We export to over 20 countries including North America, Europe, Southeast Asia, and Africa, with reliable sea and air freight options.
  • Technical Support: Our engineering team provides free consultation on material selection, heat treatment, and pipe specifications.

Our seamless pipes are manufactured under strict quality control in Liaocheng, Shandong – a renowned steel pipe production hub in China. Each pipe undergoes hydrostatic testing, ultrasonic testing, and dimensional inspection to ensure defect-free delivery. With ISO9001 certification and a dedicated export team, we have served clients in domestic and international markets, achieving a customer satisfaction rate of over 98%.

Don't compromise on quality for your critical projects. Contact us today for a quote or technical datasheet. We offer free samples for qualified inquiries and flexible payment terms.

Frequently Asked Questions

  1. What is the difference between 16Mn and 4130 material?
    16Mn is a low-carbon structural steel with good weldability and moderate strength, suitable for general piping. 4130 is a chromium-molybdenum alloy steel with higher tensile strength and hardness, often used for high-pressure and high-temperature applications.
  2. Can I get the pipe with a specific length?
    Yes, we can supply random lengths (5–12m) or fixed lengths (e.g., 6m, 12m) with a tolerance of +50mm. Custom lengths are available upon request with a minimum order quantity.
  3. What surface treatment options are available?
    Standard options include black oxide (as-rolled), varnished (coated with anti-rust oil), or hot-dip galvanized. Pickling and passivation are also available for special requirements.
  4. What is the typical lead time for an order?
    For standard sizes and quantities (less than 100 tons), lead time is around 15–20 days after deposit. Larger orders or custom specifications may require 25–35 days.
  5. Do you provide third-party inspection?
    Yes, we can arrange inspection by SGS, BV, or other independent agencies at the buyer's cost. Our own QC team also provides mill test certificates with each shipment.
  6. What is the minimum order quantity (MOQ)?
    For stock sizes, MOQ is 1 ton. For custom sizes or special materials, MOQ is typically 5 tons, but we can negotiate for trial orders.
  7. Can you supply pipes with threading or coupling?
    Yes, we offer plain ends, beveled ends, or threaded ends with couplings (NPT or BSP) per your requirements.
  8. Are your pipes suitable for sour service (H2S environment)?
    For sour service, we recommend using our 4130 grade with controlled hardness (≤ HRC 22) and optional heat treatment. Please provide your specific NACE requirement for a tailored solution.
Product Tags: Seamless Steel Pipe 16Mn 4130 , Alloy Steel Pipe Sch80 100mm OD , Low Carbon Seamless Pipe for Oil & Gas

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Gold Verified Supplier
1Yr
Verified Business License
Year Established
2025
Annual Export Value
US$50 Million - US$100 Million
Total Employees
51 - 100 People
Product Certifications
ISO9001