DIN2391 ST30Si Best Bright Finish Precision Seamless Steel Pipe, No Deformation In Cold Bending

1. Description

DIN2391 ST30 Si precision seamless steel pipe is a cold-rolled high-precision seamless steel pipe. Its wall thickness and outer diameter are very well controlled, and its surface cleanliness is high. The carbon content of this steel pipe is low, and its hardness, tensile strength and yield strength are slightly lower than those of other steel grades. The advantage is that it is easier to rework and its process performance is excellent, such as U-bend. Steel pipe can bear high pressure and impact, especially suitable for hydraulic machinery and auto parts industry. The features of this steel pipe: no deformation in cold bending, no crack in expanding, flattening, suitable for various industries requiring bending deformation processing.

Size: 6mm-168mm.
W.T.: 0.8mm-12mm.
Shape: Round.

Production type: Cold drawn or cold rolled.

Length: Single random length/ Double random length or as customer’s actual request max length is 10m.

Grade: St30 Si, St30 Al, St35, St45, St52.

2. Surface Quality

There are generally three delivery states.

A. NBK state (no oxidation bright heat treatment) Features--- high precision, good finish, no oxide layer.

B. Black phosphating state Features--- bright in black, good color, strong rust resistance.

C. Galvanizing State Features--- meet special requirements

3. Chemical Composition

4. Mechanical Properties

5. Details picture

About us

We are seamless steel pipe manufacturer. All the pipes are custom made. Please tell us what steel grade (standard) you want, and we will quote you immediately. The outer diameter, wall thickness, length and quantity of the pipe are necessary.

Founded in 2005 in Suzhou, China, Frank steel specializes in seamless steel tube production and international trade,

With the rapid development of Internet business, Frank steel, together with many famous seamless steel tube manufacturers, has jointly built an Internet business platform for seamless steel tubes. With professional and efficient services, high-quality and affordable steel tubes are sold to the world through this platform.

The main products include cold drawn and hot-rolled seamless steel pipes, including carbon steel, alloy steel, stainless steel, copper,

The company can be produced in accordance with national standards (GB), metallurgical industry standards (Yb), American ASME and ASTM standards, API standards, European EN standards, Japanese JIS standards, German DIN standards and British BS standards.

Products include: seamless steel tube for high pressure boiler, seamless steel tube for medium and low pressure boiler, seamless steel tube for oil cracking, seamless steel tube for high pressure fertilizer equipment, seamless steel tube for structure, seamless steel tube for fluid transmission, seamless steel tube for ASME T series high pressure boiler, seamless steel tube for API series oil well pipe, seamless steel tube for engineering machinery piping, cold drawn internal thread seamless steel tube, etc Carbon structural steel, alloy steel, special-shaped pipe and other seamless steel pipe products

The products are sold to large-scale petroleum pipeline, thermoelectricity, chemical industry, electric power, automobile manufacturing, ship, boiler and other industries in the world, with more than 70% of the export products, and sold to more than 40 countries and regions in Asia, Europe, America, Africa, Australia, etc

To meet your needs is my constant pursuit, striving to be the No. 1 steel export brand in China.