ASTM A350 LF3 ANSI B16.5/B16.47 Alloy Steel Slip-On Flanges

Product Information

Standards & Materials: ASTM A1350 Grade LF3

Pipe flanges made from ASTM A350 Grade LF3 are generally used in low temperature services with notch toughness testing requirements. The ASTM A350 Grade LF3 refers to a low-alloy steel designated as “3.5% nickel steel” or “3.5-Ni steel”. The deliberately controlled addition of nickel content can reduce the brittle-ductile transition temperature, whereupon improve its low temperature notch toughness significantly. The flanges may be manufactured in accordance with ASME B16.5 or ASME B16.47, or custom-designed.

Chemical Composition of ASTM A182 F11 Alloy Flanges

Mechanical Properties of ASTM A182 F11 Alloy Flanges

Charpy V-Notch Impact Test

Flanges made from ASTM A350 LF3 Class 1 or Class 2 shall take the Charpy V-notch impact test at a standard testing temperature of -150°F [-101°C]. The specimens shall be prepared in three pieces in size of 10 by 10 mm with the same heat number of the flange. The minimum impact energy required for average of each set of three specimens shall be 15 ft*lbf [20 J] for Class 1 and 20 ft*lbf [27 J] for Class 2; The minimum impact energy required for each one specimen only is 12 ft*lbf [16J] for Class 1 and 15 ft*lbf [20 J] for Class 2.

Flange Type: Slip On (SO)

Slip on flange also simplified as SO flange. SO flanges slip over pipes and are designed to bit slightly bigger on the inside than the pipe. They connect to the pipe through a fillet weld at the flange top and bottom. It is used to insert the pipe into the inner hole of flange, as the flange inner diameter is little bigger than the pipe’s outer diameter, pipe and flange could be connected by lap welding at the top and bottom of the flange.

The slip on flange is shorter in length than a weld neck flange, and is used in areas where short tie-ins are necessary or space limitations necessitate its use. Generally, the life span of a slip-on flange connection is about one-third that of the weld neck flange. Despite of additional welding involved during installation, its lower initial cost makes the SO flange preferred over WN flanges by many users. It is generally used in non-corrosive, non-critical, moderate pressure services. Slip on flanges of Class 150 and Class 300 are most commonly seen in utility engineering

Manufacturing Process

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Kasugai Shanghai, a subsidiary of Kasugai Group headquartered in Osaka, Japan, was established in 2003 as a representative office in Shanghai, China, and was upgraded to a company in 2008. Kasugai Shanghai serves as an important force of Kasugai Group in Asia, and over the past 20 years, it has become a key player in the industrial pipes, fittings, flanges, and valves market.

Kasugai Shanghai leverages the resources and manufacturing capabilities of local suppliers in China to provide a wide range of products, including stainless steel, carbon steel, duplex/super duplex steel, alloy steel, nickel alloy, and titanium alloy, according to various international standards such as ASTM/ASME/ANSI, JIS, EN, and DIN. The company also has a local support team and an on-site quality inspection team to ensure that products meet the specifications and quality requirements of customers.

With the support of high-quality local suppliers and a strong commitment to customer satisfaction, Kasugai Shanghai strives to provide reliable products and services to customers in Asia and beyond. Kasugai Group's establishment of Kasugai Shanghai and other international operations demonstrates their proactive approach to globalization and their commitment to meeting the needs of customers in a rapidly changing global market.

Kasugai Group Company Profile:

Foundation : June, 1925

Legal Representative : Akinori Kasugai

Number of employees : 140 persons (150 persons including employees of the affiliates) As of March 21, 2023

Scope of business : wholesaler and trade firm of industrial pipe/tube, fittings, flanges and valves

Kasugai Group Locations:

Head Office

4-14-2 Shinmachi, Nishi-ku, Osaka 5500013, Japan

TEL: 81-6-6538-7281

FAX: 81-6-6538-2273

E-MAIL: contact@kasugai-group.co.jp

Shanghai

Rm. A8415 Building A8, No. 808 Hongqiao Road, Xuhui District, Shanghai 200030, China.

TEL: 86-21-6447-1967

FAX: 86-21 6447-7841

E-MAIL: zhanghb@kasugai-group-co.jp

Other Branch Offices and Joint Ventures:

Fukuoka, Kitakyushu, Tokai, Kyoto, Shunan, Tokyo, USA (Watchung, N.J.), Jiangyin (Jiangsu, China)

Our Strengths:

Since our foundation in 1925, we have continuously taken steps to further grow our businesses. Global capabilities, professionalism, and trust. These three strengths are the reason that customers continue to choose Kasugai, regardless of the period.

-Global capabilities

We embarked on overseas procurement ahead of our competitors in the industry and have established a supplier network that can meet a variety of market demands. We are successfully chosen by many overseas customers
as a global procurement partner.

- Professionalism

Leveraging expertise cultivated over many years, we deliver optimal products to the optimal place at the optimal time. Our excellent information gathering and problem-solving abilities are also invaluable for solving customer issues.

- Trust

We provide smooth, prompt services by cultivating solid relationships of trust with suppliers. We believe that building stronger partnerships is the source of our growth.