St52 Carbon Steel Round Bar

• Customization: Available
• After-sales Service: Change Against Defect or Technical
• Warranty: 1 Year
• Standard: AISI
• Technique: Hot Rolled
• Application: Tool Steel Bar
• Alloy: Non-alloy
• Quality Control: Dimension, Visual
• Mill′s Test Certificate: En10204 3.1
• Length: 3m/6m/1m
• Transport Package: Bundles
• Specification: 20mm up to 600mm
• Trademark: KM/OEM
• Origin: China
• Production Capacity: 1000 Ton/Year

Product Description

St52 Carbon Steel Round Bar

A hollow bar is always round and can look like a pipe or a tube, however, typically the walls are much thicker. A hollow bar has the strength of a solid round bar, but since there is no center, there is less weight per foot which can sometimes save money, without compromising strength.
ST52 Hollow Bar or seamless mechanical tube as it is known, is a mechanical seamless hollow bar in heavy wall sections. The product has good machinability and weld ability. It is used extensively by all industry sectors for a wide range of applications utilizing its considerable saving on machining time and weight over solid bar. Typical applications are: Bushes, Cylinders Various, Conveyor Rolls, Hollow Shafts, Hollow Parts and components, Nuts, Rings, etc.
Available materials carbon, alloy and stainless steel
According to the application, hollow bar can be divided into three categories: deep hole rock drilling connecting drill rods, shallow hole rock drilling drill rods and special purpose drill rods.
Technical of manufacturing including casting pipe, drilling, piercing-drawing, piercing-hot rolling, coating and hot extrusion.
Outside diameter (OD)
+2/-0%, with a minimum of +1/-0 mm (+0.04/-0") for 275mm below OD
+/-1%  for 275 mm and above OD (10.827'')
Inside diameter (ID)
+0/-2%, with a minimum +0/-1 mm (+0/-0.04″).
Straightness
Straightness deviation max. 1.5 mm per 1000 mm (0.059 inch per 3 feet).
Lengths
Random length. Fixed lengths are available on request.
Hollow bar standard sizes range from outside diameter 32 to 273 mm (1.26 to 10.75 in.).
For sizes above 65 O.D the ordered. O.D and I.D will clean up to a length of 200mm.
Company Profile
From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc.
All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment.
Both our sales and logistic teams are over 10 years of experiences and training frequently.
After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.

Why choose us?
One-Stop Solution
We have thousands of total production experience, from raw materials to finished products.
Competitive Price
Large scale purchase, standardized production process and efficient management make our price competitive.
Quick Shipping
Years of export experience enable us to control the transportation time more accurately.
Quality Control
The standardized production process, comprehensive management system, professional testing equipment
Special material customization
We support the customization of various complex materials
OEM/ODM
We support any form of OEM/ODM customization requirements.