Black Annealed Pipe
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Your Professional Black Annealed Pipe Manufacturer
TIANJIN BO YI DA IMPORT AND EXPORT CO.,LTD is a modern production and exporting enterprise with professional experiences in international business.Our Product: galvanized steel, galvalume steel, PPGI, PPGL, hot rolled steel, cold rolled steel, stainless, wire rod, H-beam, steel pipe etc. The company is committed to providing customers with high-quality and reasonable price steel products and strives to create value for customers as its own responsibility.
Why Choose Us
High Quality
We take pride in the craftsmanship of our products and ensure that each one meets our strict standards for quality.
Production Market
Our products are exported to all over the world, including Africa (West Africa, East Africa, South Africa), Southeast Asian countries (Philippines, Vietnam, Singapore, Indonesia), and South American countries, etc. Our products are widely used in construction projects.
Global Shipping
Our company has a strong and professional logistics and distribution system, ready to meet our customers' various needs at any time.
End-to-end Services
☆Pre-Sales service
* Inquiry and consulting support.
* Sample testing support
* View our Factory.
☆After-Sales Service
*Videos or photos will send to customers
*100% Granutee quanlity and quantity.
*Vessel tracking.
Products Specifications
|
Thickness |
05-1.5mm |
|
Outer Diameter |
28mm or Cusotmized |
|
Length |
6m/9m/12m or as request |
|
Shape |
LTZ |
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Material |
Q195-Q235, DIN-S235JR, JIS-SS400, JIS-SPHC |
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Standard |
GB, DIN, JIS |
|
Alloy or Not |
Non-Alloy |
|
Type |
Black Annealed Tube,Galvanized Tube |
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Delivery Time |
Usually 7-35 dyas, or upon negotiation |
Advantages of Black Annealed Pipe
As a commonly used metal pipe, black annealed pipe is widely used in various industries. It can be used in home decoration and air compression systems. Compared with galvanized pipe, it is more suitable for high temperature and high pressure environments. This material is often used in fire sprinkler systems and gas pipelines.
The carbon content of black annealed pipe is between 0.25% and 0.55%, and an appropriate amount of manganese is added. Hot rolling or cold rolling, annealing and other production processes make it have high hardness and strength and can adapt to high temperature and high pressure environments. , suitable for industries such as construction, manufacturing, oil and gas.
The raw material carbon steel for black annealed pipes is rich in resources and the production steps are simple, so the price is relatively low and suitable for various applications.
The high melting point gives black annealed pipe good fire resistance, which makes it one of the popular options for fire protection pipes. This feature is especially important for buildings and facilities that require enhanced safety measures.
Carbon steel makes black annealed pipes malleable and can be bent, cut and processed according to the actual needs of the project. With this feature, black annealed pipes are often used as pipe supports and frames.
Application of Black Annealed Pipe
Oil and Gas Industries
Black annealed pipes are used extensively for transporting crude oil and natural gas. The pipes' strength and durability make them suitable for the high-pressure conditions found in oil and gas transport.
Water Supply Systems
Particularly in rural areas, black annealed pipes are used to transport water due to their strength and ability to withstand high pressures.
Mechanical and Structural Purposes
Black annealed pipes are used in the construction of buildings, bridges, and other infrastructure. Their strength and durability make them ideal for supporting structures.
Automotive Industries
Black annealed pipes are used in the manufacturing of cars and trucks. They are used in the vehicle's exhaust systems and other parts that require strong, durable materials.
Production Process of Black Annealed Pipe
The production process for black annealed pipe involves several precise steps to achieve the desired properties and appearance:
Steelmaking
The steelmaking process begins by smelting iron ore in a blast furnace to produce molten iron. Carbon is then added to the molten iron to produce carbon steel with the desired carbon content.
01
Rolling and Forming
The molten carbon steel is rolled into various forms, such as sheets or coils, and then formed into the desired pipe size and thickness.
02
Annealing
To increase the steel's ductility and toughness, the pipe undergoes annealing, a heat treatment process involving heating and slow cooling.
03
Pickling and Cleaning
The pipe is then pickled and cleaned to remove any surface impurities and vaporized products.
04
Surface Treatment
After cleaning, the pipe is immersed in hot oil or other media to form an iron oxide layer on the surface, giving it its characteristic dark appearance.
05
Precautions for using Black Annealed Pipe
Environment Control
Control the environment in which the black annealed pipes are installed or stored. Limit exposure to moisture, humidity, and corrosive substances to reduce the likelihood of rust formation.
Sealing and Coating
Apply a protective coating or corrosion-resistant sealant to newly installed black annealed pipes before they are put into service. This proactive measure can prolong the lifespan of the pipes and reduce the need for frequent cleaning.
Proper Handling and Storage
When handling and storing black annealed pipes, ensure that they are kept off the ground and protected from direct contact with moisture. Store them in a dry, well-ventilated area to prevent oxidation and rusting.
Regular Inspections
Implement a schedule for regular inspections of black annealed pipes to identify early signs of rust, corrosion, or contamination. Prompt identification allows for timely intervention and cleaning to prevent further deterioration.
Appropriate Use of Pipe Fittings
Utilize appropriate pipe fittings, such as couplings, elbows, and flanges, to create secure connections and minimize the risk of leaks or exposure to external elements that could contribute to pipe contamination.
Packaging and Shipping
