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TORICH INTERNATIONAL LIMITED

  • China,Ningbo ,Zhejiang
  • Verified Supplier

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China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service
China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service

  1. China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service
  2. China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service
  3. China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service
  4. China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service
  5. China GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service

GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service

  1. MOQ: 1Ton
  2. Price: Negotiable
  3. Get Latest Price
Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability 60000 Ton/Tons per Year
Delivery Time 20-40days
Packaging Details In bundles or in wooden boxes.
Standard2 GB/T 30070
Standard GB
Grade 10CrMoAl
Application Seawater Service
Section shape Round
Alloy or not Non-alloy
Technique Hot Rolled,Cold Drawn,Cold Rolled
Surface treatment customerized
Secondary or not Non-secondary
Special pipe seamless stainless steel tube
Material Carbon steel
Product name Seamless steel tube
Surface Customers't Requirement
Brand Name TORICH
Model Number GB/T 30070
Certification ISO
Place of Origin ZheJiang/China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability 60000 Ton/Tons per Year
Delivery Time 20-40days Packaging Details In bundles or in wooden boxes.
Standard2 GB/T 30070 Standard GB
Grade 10CrMoAl Application Seawater Service
Section shape Round Alloy or not Non-alloy
Technique Hot Rolled,Cold Drawn,Cold Rolled Surface treatment customerized
Secondary or not Non-secondary Special pipe seamless stainless steel tube
Material Carbon steel Product name Seamless steel tube
Surface Customers't Requirement Brand Name TORICH
Model Number GB/T 30070 Certification ISO
Place of Origin ZheJiang/China
High Light Seawater Seamless Alloy Steel PipesGB/T 30070 Seamless Steel Tube10CrMoAl Seamless Steel Tube

GB/T 30070 Seamless Steel Tube Seamless Alloy Steel Pipes For Seawater Service

Material and Specification

The GB/T 30070 standard covers the requirements for seamless alloy steel pipes specifically designed for use in seawater service. The seamless steel tubes produced according to this standard provide superior corrosion resistance, making them suitable for various marine applications.

The material used for manufacturing these seamless tubes is alloy steel, which offers enhanced strength and resistance to corrosion caused by seawater. The seamless construction ensures the absence of any welded joints, which further enhances the corrosion resistance and integrity of the pipes.

Key Features

The GB/T 30070 standard for seamless alloy steel pipes used in seawater service provides several key features that render them ideal for marine applications:

  1. Corrosion Resistance: These seamless alloy steel pipes are specifically designed and manufactured to withstand the corrosive effects of seawater, ensuring a long service life.

  2. High Strength: The alloy steel material used to produce these pipes provides excellent mechanical properties, offering high strength and durability even in demanding marine environments.

  3. Seamless Construction: The seamless design eliminates any weaknesses and vulnerabilities associated with welded joints, ensuring a reliable and leak-free performance.

  4. Wide Range of Applications: The seamless alloy steel pipes conforming to GB/T 30070 are suitable for various seawater service applications, including offshore oil and gas platforms, shipbuilding, and marine engineering projects.

Chemical Composition

The following table presents the chemical composition requirements for seamless alloy steel pipes manufactured according to the GB/T 30070 standard:

Steel Grade Chemical Composition (%)
Grade 1 C ≤ 0.18, Si ≤ 0.18, Mn ≤ 0.90, P ≤ 0.025, S ≤ 0.015, Cr ≤ 0.50, Ni ≤ 0.50, Mo ≤ 0.30
Grade 2 C ≤ 0.18, Si ≤ 0.18, Mn ≤ 0.90, P ≤ 0.025, S ≤ 0.015, Cr ≤ 0.80, Ni ≤ 1.00, Mo ≤ 0.85
Grade 3 C ≤ 0.18, Si ≤ 0.18, Mn ≤ 0.90, P ≤ 0.025, S ≤ 0.015, Cr ≤ 1.50, Ni ≤ 2.00, Mo ≤ 1.00
Grade 4 C ≤ 0.18, Si ≤ 0.18, Mn ≤ 0.90, P ≤ 0.025, S ≤ 0.015, Cr ≤ 2.50, Ni ≤ 3.50, Mo ≤ 1.50

Note: The above values are maximum limits unless otherwise specified.

Mechanical Properties

The mechanical properties for seamless alloy steel pipes conforming to GB/T 30070 are specified as follows:

Steel Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
Grade 1 ≥ 430 ≥ 255 ≥ 22
Grade 2 ≥ 510 ≥ 345 ≥ 20
Grade 3 ≥ 690 ≥ 500 ≥ 20
Grade 4 ≥ 865 ≥ 690 ≥ 15

Steel Grade and Application

The GB/T 30070 standard specifies four different steel grades for seamless alloy steel pipes used in seawater service. Each grade has a distinct chemical composition and mechanical properties, allowing for suitability in various applications.

The seamless alloy steel pipes produced under this standard are commonly used in the following applications:

  1. Offshore oil and gas platforms
  2. Shipbuilding industry
  3. Marine engineering projects
  4. Seawater desalination plants
  5. Coastal construction and infrastructure

Possible Alternative Grades

While the GB/T 30070 standard provides specific steel grades for seamless alloy steel pipes used in seawater service, there may be alternative grades available in certain cases. These alternative grades could come from other international standards or proprietary materials developed for similar applications.

 

 

     

 

     

 

 

 

 

Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.

Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.

At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.

 

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

 

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.

 

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

 

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.

 

 

Company Details

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,

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 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller

  • Year Established:

    1997

  • Total Annual:

    25000000-30000000

  • Employee Number:

    100~200

  • Ecer Certification:

    Verified Supplier

Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution provider Torich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which hol... Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution provider Torich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which hol...

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  • TORICH INTERNATIONAL LIMITED
  • Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
  • https://www.precision-steeltube.com/

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