Steel Forging Round Bars - Compliant with International Standards ASTM/DIN

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Application: Machinery Parts
• Material: Steel
• Heat Treatment: Normalizing
• Forging Tolerance: +/-0.5mm
• Standard: GB
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• International Standards: ASTM, AISI, DIN, JIS, BS
• Delivery Condition: Quenching+Tempering, Normalizing, Anealing
• Shape: Round Bar, Square, Shaft, Ring, Cylinder
• Delivery Surfaces: Black, Rough Machning Bright, Fine Maching Bright
• Alloy No: 9cr2mo, 18crmimo6, 30Cr2Ni2Mo
• Transport Package: Wooden Cartons
• Specification: Customization
• Trademark: weirun
• Origin: Jiangsu, China
• Production Capacity: 3000 Tons/Month

Product Description

Product Description

Chemical Composition (%):

	C	Si	Mn	P	S	Cr	Mo	Ni	Standard
9Cr2Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	1.70-2.10	0.20-0.40	≤0.25	GB/T13314-2008
18CrNiMo7-6	0.15-0.21	≤0.4	0.50-0.90	≤0.025	≤0.035	1.50-1.80	0.25-0.35	1.4-1.7	EN 10084-2008
30Cr2Ni2Mo	0.26-0.34	0.17-0.37	0.50-0.80	≤0.020	≤0.020	1.80-2.20	0.30-0.50	1.80-2.20	GB/T3077-2015

Main Products

Company Profile

Jiangsu Weirun Forging Co., Ltd.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. stands as a trailblazer in China's alloy steel smelting and forging realm. Born from the strategic merger of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., this prestigious company inherits a proud legacy of being among the first to master the intricate craft of manufacturing a diverse range of forged products. Weirun's tradition is deeply rooted in an uncompromising commitment to quality and an insatiable pursuit of innovation.
Jiangsu Weirun is a vanguard in alloy steel smelting, electroslag remelting, and forging, and serves as a renowned leader in mold manufacturing. Through relentless progress, our extensive industrial chain intricately weaves together material recycling, smelting, electroslag casting, forging, and the meticulous precision machining of molds. We are committed to delivering unrivaled quality and unparalleled service across domestic and international markets.
Our state-of-the-art facility spans a grand 60,000 square meters, equipped with cutting-edge electroslag furnaces—featuring three 1-ton furnaces, a singular 3-ton unit, and a mighty 10-ton powerhouse. Our forging capability is driven by two 2-ton air hammers, complemented by a 1-ton and a 0.75-ton air hammer, along with mechanized electro-hydraulic hammer lines of 5 and 8 tons. Our advanced mechanical processing and heat treatment equipment, enhanced by spectrometers and a comprehensive suite of testing devices, bolster our robust industrial output, achieving an impressive 300 million yuan with fixed assets of 153 million yuan. A committed team of over 200 professionals, including 20 technical experts, proudly ranks us among Danyang City's top fifty in sales and tax contributions.
Driving our future forward, Jiangsu Weirun has strategically embraced a philosophy anchored in talent acquisition and has forged strong collaborations with esteemed domestic universities and research institutions to foster continuous innovation. Our unwavering commitment to technological advancement has been recognized with 5 national patents for groundbreaking inventions and 3 utility model patents, solidifying our dedication to pioneering progress.
With an extraordinary annual production capacity exceeding 30,000 tons of steel ingots and a forging capability of 15,000 tons, Jiangsu Weirun caters to a wide array of sectors, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our mantra of 'pursuing excellence and building a world brand,' we strive to align with international markets and standards, proudly holding esteemed certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a premier provider of forged products, Weirun is committed to delivering unmatched quality and professional expertise, ensuring an exceptional service experience for our discerning clients.

FAQ

• What is the difference between forging and casting?

  Forging: It is the process of transforming a solid from one shape to another. Casting: It is the process of transforming a shapeless liquid metal into a solid with a shape. The so-called casting is the process of casting molten metal into a model to obtain a casting. The casting profession focuses on the metal melting process and the control of processes during the casting process. Forging is a plastic forming process in the solid state, which can be divided into hot processing and cold processing. Forgings include extrusion, drawing, roughening, punching, and so on. Casting is a solid liquid solid process, while forging is a solid to solid process where a solid can change its shape into another shape at high temperatures. There are still differences in the shape process and process of the two.

• How to choose high-quality forgings?

  In the quality inspection of forgings, there are mainly external observation methods and internal inspection methods. The appearance method, as the name suggests, is to observe the appearance of the product, such as the shape, geometric dimensions, surface condition, etc. of the forging, in order to understand whether it meets the standards and whether there are external defects. Specifically, it is to check whether the external dimensions of the forging meet the specifications and whether there are defects on the surface, such as cracks, wrinkles, bubbles, indentations, pits, impurities, scratches, etc. on the surface of the forging. Internal testing mainly involves analyzing the chemical composition, macroscopic and microscopic structures, and mechanical properties of forgings. This inspection process requires the use of specialized instruments for high magnification inspection, with the aim of checking for any phenomena such as fractures and shrinkage within the forging, as well as defects such as dendrites and white spots, disordered flow lines, and throughflow. It also includes the tensile strength, ductility, hardness, plasticity, and heat resistance temperature of the forging.

• What are the characteristics of the forging process for blank forgings?

  The forging process of circular forgings mainly consists of the following processes: pier roughening, elongation, punching, and expanding. The difference between free forging and ring rolling processes is mainly in the process of expanding holes. In the production of ring forgings, free forging is usually used to expand the hole with a horse screw, while ring rolling is mainly used to expand the hole with rolling.