Carbon Steel Pipe Fittings
Carbon steel pipe fittings are made of steel ingots or solid round steel perforated into capillary tubes, which are then hot rolled, cold rolled or cold drawn. Carbon steel pipe fittings play an important role in my country’s steel pipe industry.
REFINE BY
- Flange Manufacturer
- Flange standard
- Welding Neck Flange
- Stainless steel Flange
- Carbon & Alloy steel Flange
- Blind Flange
- Lap Joint Flange
- Orifice Flange
- Threaded Flange
- Swivel Ring Flange
- Reducing Flange
- Slip-On Flange
- Spectacle Blind Flange
- Compact Flange
- 1/2" (24)
- 3/4" (24)
- 1" (24)
- 1-1/4" (24)
- 1-1/2" (24)
- 2" (25)
- 2-1/2" (24)
- 3" (24)
- 4" (20)
- 4" (20)
- 304L (179)
- 316L (179)
Carbon Steel Pipe Fittings Models
Carbon steel pipe fittings are currently the most widely used pipe fitting products. The main materials are q235, 20#, 35#, 45#, and 16mn. The main products include carbon steel elbows, carbon steel flanges, carbon steel tees, carbon steel crosses, carbon steel reducers (large and small heads), carbon steel heads (pipe caps), etc.
The Main Implementation Standards Of Carbon Steel Pipe Fittings
The main implementation standards include national standards, American standards, Japanese standards, etc. Among them, Chinese standards include standards of the Ministry of Chemical Industry, Sinopec pipe fittings standards, and power pipe fittings standards.
Material Technical Requirements
The quality of raw materials shall be implemented in accordance with the standard requirements of the corresponding grade materials of the bidding pipe fittings, and the quality of the final product shall be purchased according to the requirements in the bidding documents.
Manufacturing Process Of Carbon Steel Pipe Fittings
Manufacturing and inspection: The wall thickness of steel pipes and steel plates, the raw materials for manufacturing pipe fittings, should be selected with positive tolerance wall thickness.
- The carbon steel seamless elbow is formed by medium-frequency hot pushing, and the heating method is medium-frequency induction heating.
- The carbon steel seamed elbow is made of steel plates pressed into two half-shell elbows and then assembled and butt welded into an elbow.
- Carbon steel seamless tee: adopts hot-drawn forming process, and its heating method is electric furnace heating.
- Carbon steel seamed tees are rolled and welded into steel pipes and then hot drawn into shape.
- All pipe caps are molded from steel plates.
- All seamed pipe fittings are welded using manual arc welding (SMAW). Before welding, the buyer must be provided with the welding procedure specification (WPS) and welding procedure qualification record (PQR) of the corresponding material that covers all seamed pipe fittings.
- Heat treatment: The heat treatment method of carbon steel pipe fittings is: normalizing treatment at 890℃~920℃, cooling method: air cooling, and the holding time is determined according to 2.5min/mm wall thickness, not less than 30 minutes.
Machining And Structural Dimensions Of Pipe Fittings
For pipe fittings bevel processing, use machining methods to perform end bevel processing according to standard requirements. Structural dimensions, tolerances and connection types should comply with ASME B16.9, ASME B16.11, MSS SP -97 standard requirements.
Surface treatment: The surface of all ASME B16.9 pipe fittings is ground to remove internal and external surface defects and oxides, and then shot blasted and rust removed. After shot blasting, the surface should reach Sa2.5 level, and two coats of inorganic zinc-rich primer are applied. Paint, total paint thickness is 75 microns.
The above is the general process of manufacturing carbon steel pipe fittings. The specific manufacturing process may differ due to specific product specifications and requirements.
The Classification Of Carbon Steel Fittings
Carbon steel pipe fittings are divided into two categories: hot-rolled and cold-rolled (drawn) steel pipe fittings.
- Hot-rolled carbon steel pipe fittings are divided into general steel pipe fittings, low and medium pressure boiler steel pipe fittings, high pressure boiler steel pipe fittings, alloy steel pipe fittings, stainless steel pipe fittings, petroleum cracking pipe fittings, geological steel pipe fittings and other steel pipe fittings.
- In addition to general steel pipe fittings, low- and medium-pressure boiler steel pipe fittings, high-pressure boiler steel pipe fittings, alloy steel pipe fittings, stainless steel pipe fittings, petroleum cracking pipe fittings, and other steel pipes, cold-rolled (rolled) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, and stainless steel pipes. Rusty thin-walled steel pipes, special-shaped steel pipes.
Application Of Carbon Steel Pipe Fittings
General carbon steel pipe: It is made of hot-rolled or cold-rolled high-quality carbon steel .
Advantages Of Carbon Steel Pipe Fittings
- Excellent corrosion resistance: This excellent corrosion resistance enables carbon steel pipelines to maintain a long service life in humid and corrosive environments, and is especially suitable for chemical, petroleum, electric power and other industries.
- High strength and durability: As the main material of pipelines, carbon steel has high strength and hardness. This enables carbon steel galvanized pipes to withstand greater pressure and weight, making them suitable for various complex conveying systems.
- Good processability and weldability: This makes the processing and installation of carbon steel galvanized pipes relatively easy. This reduces construction costs and improves engineering efficiency.
- Economical: Compared with other pipe materials, the price of carbon steel galvanized pipes is relatively low. At the same time, carbon steel pipelines have high economic advantages due to their long service life and low maintenance costs.
- Wide range of applications: Carbon steel pipes are not only widely used in the construction field, such as water supply, drainage, heating and other piping systems, but also play an important role in municipal, industrial, electric power and other fields.
Carbon steel pipe fittings are widely used in modern construction and industry due to their unique physical and chemical properties. This kind of pipe not only has excellent corrosion resistance, but also has high strength and durability, making it ideal for transporting water, gas and other fluids.
Surface Treatment And Maintenance Of Carbon Steel Pipe Fittings
- There are many surface treatment processes for carbon steel pipe fittings; for example: cleaning and degreasing, rust removal, passivation, pickling, rust prevention, polishing, electroplating, electrophoresis, etc. In recent years, the more mature and widely used processes are Surface treatment processes such as pickling, passivation and electrolytic polishing.
- For surface pickling and passivation, soak the entire pipe fitting in the carbon steel pickling passivation solution until the surface of the flexible waterproof casing completely presents a uniform silvery white color, then take out the workpiece and rinse the surface with clean water.
- Most pipe fitting manufacturers require pickling and passivation because they need to remove weld scars and high-temperature oxide scale on the surface and make the surface color of the pipe fittings uniform and beautiful. Since the carbon steel pickling passivation solution can be recycled repeatedly, it does not evaporate, is not volatile, and does not produce yellow smoke or hydrogen embrittlement. Therefore, it has a good operating environment and does not require special equipment. Therefore, it is mostly used in pickling the surface of pipe fittings.
- Surface electrolytic polishing: fix the carbon steel that needs to be polished on a professional hanger, then turn on the electrolytic polishing equipment, adjust the power supply voltage, and then immerse the fixed pipe fittings in the electrolyte that is powered and heated to 75 degrees. , the general time is 1-3 minutes, until the surface is bright, the workpiece can be taken out and rinsed clean.
- The brightness of the watch can be adjusted and controlled manually according to different requirements. The surface of carbon steel compression pipe fittings after electrolytic polishing shows a consistent bright and delicate effect, and its surface gloss can reach an 8K mirror effect. And it lasts as bright as new without peeling off. Compared with pickling, this kind of treatment is more expensive and is relatively rarely used.
Elite Piping Manufacture is a very professional company and we will definitely have products that will satisfy you.You can be sure that the products you get are backing with our commitment to quality and customer satisfaction. We provide competitive prices, fast transportation time and excellent customer service to ensure that you get the best experience.
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Company:
bazhou elite s
d manufacture co.,ltd.
Factory Address：
Office # 805, Building No. 6 Poly Metropolitan, Yongshum Town, Tongzhou District, Beijing, China.
Contact Person：
Thomas
Contact Numbers：
+86 88888888888
Email:
sales@ematal.com
