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Q345 Hot Rolled Carbon Seamless Steel Pipe Factory Direct Sales 10# 20# 35# 45#
Description
The production process of seamless carbon steel pipes involves several critical steps to achieve high-quality, seamless tubes suitable for various industrial applications. Here's a detailed overview of the typical manufacturing process:
Raw Material Selection: The process begins with selecting high-quality raw materials, typically carbon steel billets or solid round steel bars. These materials are chosen based on their chemical composition, mechanical properties, and suitability for seamless pipe production.
Heating: The selected raw material undergoes heating in a rotary hearth furnace or induction furnace to reach a uniform forging temperature. Heating is crucial to facilitate plastic deformation and subsequent forming processes.
Piercing: The heated billet or round bar is pierced at the center with a mandrel mill or a piercing machine. This process creates a hollow shell called a "bloom" or "billet" with a thick wall.
Rolling: The pierced bloom or billet is then rolled and stretched over a mandrel on a continuous rolling mill. This process reduces the wall thickness and increases the length of the hollow shell. As it passes through several sets of rolls, the outer diameter and wall thickness are gradually reduced to achieve the desired dimensions.
Annealing: After rolling, the seamless pipe undergoes heat treatment known as annealing. This process involves heating the pipe to a specific temperature and holding it for a period to relieve internal stresses and ensure uniform mechanical properties throughout the pipe.
Sizing: The annealed pipe is passed through a series of sizing rolls to achieve the final dimensions and improve surface finish. Sizing also ensures the accuracy of the outer diameter and wall thickness according to the specified tolerances.
Straightening: If necessary, the pipe undergoes straightening to correct any bending or distortion caused during the manufacturing process. Straightening ensures the pipe meets the required straightness criteria.
Testing and Inspection: Throughout the production.
Industry-Specific Attributes
| Section Shape | Round |
| Surface Treatment | Hot Rolled |
| Tolerance | ±1% |
| Oiled or Non-oiled | Non-oiled |
| Invoicing | by theoretical weight |
Other Attributes
| Place of Origin | Shanxi, China |
| Alloy Or Not | Is Alloy |
| Standard | ASTM,AISI,BS,DIN,GB,JIS |
| Grade | Q235A, Q235B, Q345, L245, L290 |
| Delivery Time | 8-14 days |
| Brand Name | XINBAODA |
| Application | Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe |
| Special Pipe | API Pipe |
| Thickness | 2.11mm~300mm, 2.11mm~300mm |
| Length | 12M, 6m, 6.4M |
| Certificate | ISO9001 |
| Processing Service | Bending,Welding,Decoiling,Punching, Cutting |
| Product name | Seamless Steel Pipe |
| Standard | ASTM,AISI,BS,DIN,GB,JIS |
| Shape | Round.Square. Rectangular |
| Length | customers' actual request |
| Material | Q235A, Q235B, Q345, L245, L290,10#, 20#, 45# |
| Surface Treatment | painted,galvanized,or oiled according to customer's requirement |
| Technical Methods | Hot-rolled/Cold-drawn/Hot-expanded |
| Delivery time | 8-14 days |
| Advantage | Strong Corrosion Resistance |
| Packing | STANDARD PACKING |
Packaging and Delivery
| Packaging Details | Anti-water paper+steel strips. |
| Port | Qingdao Tinajin or Shanghai |
| Selling Units: | Single item |
Supply Ability
| Supply Ability | 100000 Ton/Tons per Month |
Product Display
