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SPAI STEEL

MANUFACTURER & EXPORTER

 * Home
 * About Us
   * Comapny Profile
   * Our advantage
   * Certificate
   * Mill partners
   * Clients
 * Products
   * OCTG
   * Carbon Steel Pipe&Tube
   * Coated Pipe
   * Alloy Steel Pipe
   * Stainless Steel Pipe
   * Structural Steel Section
   * Pipe Fitting&Flange
   * Hydralic Fitting&Machinery Accessories
   * Electronic products
   * Municipal engineering
 * Factory
   * Production Equipment
   * Manufacturing Process
   * Inspection Center
 * Projects
   * Oil&Gas
   * Water Treatment
   * Civil Construction
   * Power Energy
   * Marine&Offshore
   * Mining
   * Chemical
 * News Center
   * Industry news
   * FAQ
   * Pipe knowledge
   * Standard
 * Services
   * Slotting
   * Cutting
   * Coating
   * Shot Blasting
   * Galvanizing
   * Threading
   * Grooving
   * Custom Pipe&Fittings Fabrication
   * Inspection
   * Packing&Marking
   * Warehouse
   * Logistics
   * Technical&Doucment Required
 * Contact
   * Contact Us
   * Sales Team
   * Online Inquiry
 * Español


HUNAN SPAI PIPE INDUSTRY CO., LTD


 * Home
 * About Us
   * Comapny Profile
   * Our advantage
   * Certificate
   * Mill partners
   * Clients
 * Products
   * OCTG
   * Carbon Steel Pipe&Tube
   * Coated Pipe
   * Alloy Steel Pipe
   * Stainless Steel Pipe
   * Structural Steel Section
   * Pipe Fitting&Flange
   * Hydralic Fitting&Machinery Accessories
   * Electronic products
   * Municipal engineering
 * Factory
   * Production Equipment
   * Manufacturing Process
   * Inspection Center
 * Projects
   * Oil&Gas
   * Water Treatment
   * Civil Construction
   * Power Energy
   * Marine&Offshore
   * Mining
   * Chemical
 * News Center
   * Industry news
   * FAQ
   * Pipe knowledge
   * Standard
 * Services
   * Slotting
   * Cutting
   * Coating
   * Shot Blasting
   * Galvanizing
   * Threading
   * Grooving
   * Custom Pipe&Fittings Fabrication
   * Inspection
   * Packing&Marking
   * Warehouse
   * Logistics
   * Technical&Doucment Required
 * Contact
   * Contact Us
   * Sales Team
   * Online Inquiry
 * Español

We are a pipe fittings customization specialist

We are a pipe fittings customization specialist, we are steel pipes and fittings
solution provider for Nuclear Power Plants, Thermal Power Stations, Atomic Power
Plants, Oil&Gas, Construction, Energy, Petrochemical, Fertilizers, and Chemicals
& Pharmaceuticals industries.

We are a pipe fittings customization specialist

We are a pipe fittings customization specialist, and we are steel pipes and
fittings solution provider for Nuclear Power Plants, Thermal Power Stations,
Atomic Power Plants, Oil&Gas, Construction, Energy, Petrochemical, Fertilizers,
and Chemicals & Pharmaceuticals industries.

We are a pipe fittings customization specialist

We specialize in providing customized solutions for steel pipes and fittings,
and we are steel pipes& fittings solution provider for Nuclear Power Plants,
Thermal Power Stations, Atomic Power Plants, Oil&Gas, Construction, Energy,
Petrochemical, Fertilizers, and Chemicals & Pharmaceuticals industries.





We are a pipe fittings customization specialist

We are a pipe fittings customization specialist, we are steel pipes and fittings
solution provider for Nuclear Power Plants, Thermal Power Stations, Atomic Power
Plants, Oil&Gas, Construction, Energy, Petrochemical, Fertilizers, and Chemicals
& Pharmaceuticals industries.

We are a pipe fittings customization specialist

We are a pipe fittings customization specialist, we are steel pipes and fittings
solution provider for Nuclear Power Plants, Thermal Power Stations, Atomic Power
Plants, Oil&Gas, Construction, Energy, Petrochemical, Fertilizers, and Chemicals
& Pharmaceuticals industries.

We are a pipe fittings customization specialist

We are a pipe fittings customization specialist, we are steel pipes and fittings
solution provider for Nuclear Power Plants, Thermal Power Stations, Atomic Power
Plants, Oil&Gas, Construction, Energy, Petrochemical, Fertilizers, and Chemicals
& Pharmaceuticals industries.






HUNAN SPAI PIPE INDUSTRY CO., LTD

Hunan Spai Pipe Industry Co., Ltd ,as the most valuable subsidiary
under SP Group, A PIPE FITTINGS CUSTOMIZATION SPECIALIST, is steel pipes and
fittings solution provider for Nuclear Power Plants, Thermal Power Stations,
Atomic Power Plants, Oil&Gas, Construction(building,agricultural irrigation,food
factory,coastal,port...), Energy, Petrochemical, Fertilizers, Electronic goods
and Chemicals & Pharmaceuticals industries.We can fulfill dozens of Chinese &
international standards(GB,API, ASTM,SAME /ANSI, BS, DIN, JIS,GOST), and
customize products with special technical protocols required by our clients.

Vision: Make SP be an reputable brand of “one-stop service provider”
Mission: Use Spai Steel to build a shining world
Core Value: Reliability, Gratitude, Integrity and quality
 * Comapny Profile
 * Our advantage
 * Certificate
 * Mill partners
 * Clients


CONTACT US FOR FREE QUOTE

You can contact us any way that is convenient for you. We are available 24/7 via
fax or email. 
You can also use a quick contact form below or visit our office personally.


Contact Us


PRODUCTS


 * OCTG


 * CARBON STEEL PIPE&TUBE


 * COATED PIPE


 * ALLOY STEEL PIPE


 * STAINLESS STEEL PIPE


 * STRUCTURAL STEEL SECTION


 * PIPE FITTING&FLANGE


 * HYDRALIC FITTING&MACHINERY ACCESSORIES

More Product


OUR PROJECTS




WE, SPAI INDUSTRY, EXPERIENCED IN HANDLING VARIOUS OF PROJECTS, INCLUDING BUT
NOT ONLY: OIL, GAS, WATER TREATMENT, CONSTRUCTION, CHEMICAL, MINING, POWER
ENERGY, MARINE&OFFSHORE INDUSTRY, WE CAN FULFILL DOZENS OF CHINESE &
INTERNATIONAL STANDARDS(GB,API, ASTM,SAME /ANSI, BS, DIN, JIS,GOST), AND
CUSTOMIZE PRODUCTS WITH SPECIAL TECHNICAL PROTOCOLS REQUIRED BY OUR
CLIENTS.SPAISTEEL IS FOCUS ON THE SUPERIOR QUALITY, FAST DELIVERY TIME AND
COMPETITIVE PRICE , THUS WE ARE KEEPING LONG TIME BUSINESS RELATIONSHIP WITH
MOST OF OUR CLIENTS FROM THE MIDDLE EAST, SOUTHEAST ASIA, EUROPE, AFRICA, SOUTH
AMERICA, OCEANIA ,AND MORE THAN 100 COUNTRIES AND REGIONS. BUY STEEL
PIPES&FITTINGS, FIND US, PROFESSIONAL MANUFACTURER&SUPPLIER OF STEEL PIPES,
TUBES AND FITTINGS.


MEANWHILE, WE SPECIALIZE IN PROVIDING CUSTOMIZED SOLUTIONS FOR STEEL PIPES AND
FITTINGS. OUR BUSINESS SCOPE COVERS A WIDE RANGE OF MATERIALS, INCLUDING CARBON
STEEL, STAINLESS STEEL, AND ALLOY STEEL.
AT OUR COMPANY, WE UNDERSTAND THAT EVERY PROJECT HAS UNIQUE REQUIREMENTS. THAT’S
WHY WE OFFER TAILOR-MADE SOLUTIONS FOR SPECIAL MATERIALS AND DIMENSIONS. WHETHER
YOU NEED PIPES WITH SPECIAL MATERIAL PROPERTIES OR NON-STANDARD SIZES, WE HAVE
THE EXPERTISE TO MEET YOUR SPECIFIC NEEDS.
OUR TEAM OF PROFESSIONALS IS DEDICATED TO DELIVERING HIGH-QUALITY PRODUCTS AND
EXCEPTIONAL SERVICE. WE WORK CLOSELY WITH OUR CLIENTS TO UNDERSTAND THEIR
PROJECT REQUIREMENTS AND PROVIDE THE MOST SUITABLE SOLUTIONS. OUR ADVANCED
MANUFACTURING FACILITIES AND STRICT QUALITY CONTROL PROCESSES ENSURE THAT OUR
PRODUCTS MEET THE HIGHEST INDUSTRY STANDARDS.
IN ADDITION TO OUR CUSTOMIZED SERVICES, WE ALSO OFFER A COMPREHENSIVE RANGE OF
STANDARD STEEL PIPES AND FITTINGS. OUR EXTENSIVE INVENTORY AND EFFICIENT
LOGISTICS ENSURE TIMELY DELIVERY TO MEET YOUR PROJECT DEADLINES.

















 * WHAT ARE THE INSULATION METHODS FOR ANTI-CORROSION STEEL PIPES
   
   


 * CHEMICAL MINERAL EXPLOITATION IN OMAN
   
   


 * 2500 TONS WELDED STEEL PIPE FOR MINING PROJECT IN CHILE
   
   


 * INDONESIA OFFSHORE ENGINEERING
   
   


 * ENERGY PROJECT IN ALGERIA
   
   


 * SOUTH AFRICA CHEMICAL PLANT PROJECT
   
   


 * EUROPE WATER PIPELINE PROJECT
   
   


 * WEST AFRICA PIPELINE FOR WATER SYSTEMS
   
   

More Project


CUSTOMIZED SERVICES

 * Slotting
 * Cutting
 * Coating
 * Shot Blasting
 * Galvanizing
 * Threading
 * Grooving
 * Custom Pipe&Fittings Fabrication
 * Inspection
 * Packing&Marking
 * Warehouse
 * Logistics
 * Technical&Doucment Required




LATEST NEWS

2023-11-24


WHAT SHOULD BE DONE AT THE END OF COOLING LARGE DIAMETER STEEL PIPES

(1) after cooling is completed, that is, when the temperature of the surface
layer and the temperature of the core are consistent, the elastic deformation of
the surface layer and the core will also disappear and return to their original
state. although instantaneous thermal stress is generated duri
2023-11-21


WHY ARE LARGE-DIAMETER STEEL PIPE MOSTLY WELDED WITH STEEL

1. the use of large diameter stainless steel can be divided into oil well
pipelines (casing, oil pipe drilling, etc.), pipeline pipelines, boiler pipes,
mechanical structure pipes, hydraulic support pipes, cylinder pipes, geological
pipelines, geological pipelines, geological pipelines, and chemical
2023-11-20


FIVE TYPES OF ANNEALING METHODS IN THE STEEL PIPE

1. complete annealingprocess: heat the steel to 20-30 ℃ above ac3, fix it for a
period of time, and slowly cool it (along with the furnace) to obtain a heat
treatment process that is close to equilibrium structure (complete
austenitization).complete annealing is mainly used for herbicide steel (wc=0
2023-12-18


CLASSIFICATION AND CORROSION PROTECTION OF OIL CASING

petroleum casing can be roughly divided into different usage methods, and
surface casing can be carried out according to different usage methods. 2.
intermediate shell. 3. production of casing. 4. drilling. the main purpose of
surface casing is to suspend and support subsequent casing layers through
2023-12-14


STEEL STRUCTURE MAINTENANCE AND UPKEEP

1. conventional rust and corrosion protection.typically, the designed steel
structure has a service life of 50-70 years. the chance of damage due to
overloading during the use of steel structures is very low. most steel structure
damage is caused by corrosion, which reduces the mechanical and physic
2023-12-13


FACTORS AFFECTING THE ACCURACY AND RESOLUTION OF OIL CASING WALL THICKNESS
DETECTION

according to api standards, the internal and external surfaces of imported and
exported oil casings must not be folded, separated, cracked, or scarred. these
defects should be completely eliminated, and the removal depth should not be
less than 12.5% of the nominal wall thickness. the oil casing mus
2023-12-11


ANTI CORROSION OF BURIED STEEL PIPES IN URBAN SEWAGE

several methods can be used to resist corrosion in buried urban sewage
pipelines:1. petroleum asphalt glass fiber cloth coatingthis corrosion
resistance method has been used more in oil pipelines, but it has now been
eliminated. its advantages are a wide range of raw materials and low-cost
sources.
2023-12-11


ANTI CORROSION OF BURIED STEEL PIPES IN URBAN SEWAGE

several methods can be used to resist corrosion in buried urban sewage
pipelines:1. petroleum asphalt glass fiber cloth coatingthis corrosion
resistance method has been used more in oil pipelines, but it has now been
eliminated. its advantages are a wide range of raw materials and low-cost
sources.
2023-11-29


METHOD FOR PREVENTING QUENCHING CRACKS OF MEDIUM AND HIGH CARBON LOW ALLOY STEEL
PIPES

(a) if the entire steel pipe is cooled to the massey's mass transfer stop
temperature (mf point), or reduced by strong water quenching, there is a higher
likelihood of quenching cracks occurring.(b) due to the significant extension of
the crack in the axial direction of the steel pipe during quenchi
2023-11-27


COMPARISON OF REAGENTS FOR STRAIGHT SEAM STEEL PIPES

straight seam steel pipe products are widely used in water supply engineering,
petrochemical industry, chemical industry, power industry, agricultural
irrigation, and urban construction. they are 20 key products developed in our
country. straight seam steel pipes are used for liquid transportation:
2023-11-24


WHAT SHOULD BE DONE AT THE END OF COOLING LARGE DIAMETER STEEL PIPES

(1) after cooling is completed, that is, when the temperature of the surface
layer and the temperature of the core are consistent, the elastic deformation of
the surface layer and the core will also disappear and return to their original
state. although instantaneous thermal stress is generated duri
2023-11-21


WHY ARE LARGE-DIAMETER STEEL PIPE MOSTLY WELDED WITH STEEL

1. the use of large diameter stainless steel can be divided into oil well
pipelines (casing, oil pipe drilling, etc.), pipeline pipelines, boiler pipes,
mechanical structure pipes, hydraulic support pipes, cylinder pipes, geological
pipelines, geological pipelines, geological pipelines, and chemical
2023-11-20


FIVE TYPES OF ANNEALING METHODS IN THE STEEL PIPE

1. complete annealingprocess: heat the steel to 20-30 ℃ above ac3, fix it for a
period of time, and slowly cool it (along with the furnace) to obtain a heat
treatment process that is close to equilibrium structure (complete
austenitization).complete annealing is mainly used for herbicide steel (wc=0
2023-12-18


CLASSIFICATION AND CORROSION PROTECTION OF OIL CASING

petroleum casing can be roughly divided into different usage methods, and
surface casing can be carried out according to different usage methods. 2.
intermediate shell. 3. production of casing. 4. drilling. the main purpose of
surface casing is to suspend and support subsequent casing layers through
2023-12-14


STEEL STRUCTURE MAINTENANCE AND UPKEEP

1. conventional rust and corrosion protection.typically, the designed steel
structure has a service life of 50-70 years. the chance of damage due to
overloading during the use of steel structures is very low. most steel structure
damage is caused by corrosion, which reduces the mechanical and physic
2023-12-13


FACTORS AFFECTING THE ACCURACY AND RESOLUTION OF OIL CASING WALL THICKNESS
DETECTION

according to api standards, the internal and external surfaces of imported and
exported oil casings must not be folded, separated, cracked, or scarred. these
defects should be completely eliminated, and the removal depth should not be
less than 12.5% of the nominal wall thickness. the oil casing mus


2023-11-20


FIVE TYPES OF ANNEALING METHODS IN THE STEEL PIPE

1. complete annealingprocess: heat the steel to 20-30 ℃ above ac3, fix it for a
period of time, and slowly cool it (along with the furnace) to obtain a heat
treatment process that is close to equilibrium structure (complete
austenitization).complete annealing is mainly used for herbicide steel (wc=0
2023-12-18


CLASSIFICATION AND CORROSION PROTECTION OF OIL CASING

petroleum casing can be roughly divided into different usage methods, and
surface casing can be carried out according to different usage methods. 2.
intermediate shell. 3. production of casing. 4. drilling. the main purpose of
surface casing is to suspend and support subsequent casing layers through
2023-12-14


STEEL STRUCTURE MAINTENANCE AND UPKEEP

1. conventional rust and corrosion protection.typically, the designed steel
structure has a service life of 50-70 years. the chance of damage due to
overloading during the use of steel structures is very low. most steel structure
damage is caused by corrosion, which reduces the mechanical and physic
2023-12-13


FACTORS AFFECTING THE ACCURACY AND RESOLUTION OF OIL CASING WALL THICKNESS
DETECTION

according to api standards, the internal and external surfaces of imported and
exported oil casings must not be folded, separated, cracked, or scarred. these
defects should be completely eliminated, and the removal depth should not be
less than 12.5% of the nominal wall thickness. the oil casing mus
2023-12-11


ANTI CORROSION OF BURIED STEEL PIPES IN URBAN SEWAGE

several methods can be used to resist corrosion in buried urban sewage
pipelines:1. petroleum asphalt glass fiber cloth coatingthis corrosion
resistance method has been used more in oil pipelines, but it has now been
eliminated. its advantages are a wide range of raw materials and low-cost
sources.
2023-12-11


ANTI CORROSION OF BURIED STEEL PIPES IN URBAN SEWAGE

several methods can be used to resist corrosion in buried urban sewage
pipelines:1. petroleum asphalt glass fiber cloth coatingthis corrosion
resistance method has been used more in oil pipelines, but it has now been
eliminated. its advantages are a wide range of raw materials and low-cost
sources.
2023-11-29


METHOD FOR PREVENTING QUENCHING CRACKS OF MEDIUM AND HIGH CARBON LOW ALLOY STEEL
PIPES

(a) if the entire steel pipe is cooled to the massey's mass transfer stop
temperature (mf point), or reduced by strong water quenching, there is a higher
likelihood of quenching cracks occurring.(b) due to the significant extension of
the crack in the axial direction of the steel pipe during quenchi
2023-11-27


COMPARISON OF REAGENTS FOR STRAIGHT SEAM STEEL PIPES

straight seam steel pipe products are widely used in water supply engineering,
petrochemical industry, chemical industry, power industry, agricultural
irrigation, and urban construction. they are 20 key products developed in our
country. straight seam steel pipes are used for liquid transportation:
2023-11-24


WHAT SHOULD BE DONE AT THE END OF COOLING LARGE DIAMETER STEEL PIPES

(1) after cooling is completed, that is, when the temperature of the surface
layer and the temperature of the core are consistent, the elastic deformation of
the surface layer and the core will also disappear and return to their original
state. although instantaneous thermal stress is generated duri
2023-11-21


WHY ARE LARGE-DIAMETER STEEL PIPE MOSTLY WELDED WITH STEEL

1. the use of large diameter stainless steel can be divided into oil well
pipelines (casing, oil pipe drilling, etc.), pipeline pipelines, boiler pipes,
mechanical structure pipes, hydraulic support pipes, cylinder pipes, geological
pipelines, geological pipelines, geological pipelines, and chemical
2023-11-20


FIVE TYPES OF ANNEALING METHODS IN THE STEEL PIPE

1. complete annealingprocess: heat the steel to 20-30 ℃ above ac3, fix it for a
period of time, and slowly cool it (along with the furnace) to obtain a heat
treatment process that is close to equilibrium structure (complete
austenitization).complete annealing is mainly used for herbicide steel (wc=0
2023-12-18


CLASSIFICATION AND CORROSION PROTECTION OF OIL CASING

petroleum casing can be roughly divided into different usage methods, and
surface casing can be carried out according to different usage methods. 2.
intermediate shell. 3. production of casing. 4. drilling. the main purpose of
surface casing is to suspend and support subsequent casing layers through



More News


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PRODUCT CATEGORY

 * OCTG
   
   Carbon Steel Pipe&Tube
   
   Coated Pipe
   
   Alloy Steel Pipe
   
   Stainless Steel Pipe
   
   Structural Steel Section
   
   Pipe Fitting&Flange
   
   Hydralic Fitting&Machinery Accessories
   
   Electronic products
   
   Municipal engineering


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High-Tech Industry Zone, Changsha, Hunan, China Office:+8619520002964
Mob/WA:+8615874086780 Email:info@spai-steel.com

Copyright © 2021 Hunan Spai Pipe Industry Co., Ltd All rights reserved.

Phone ：

+8619520002964

Whatsapp :

+8615874086780

E-mail :

INFO@SPAI-STEEL.COM

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316019572