WN Duplex Stainless Steel Flanges RF 900# 26"- 48" ASME B16.47 SER.B ASTM A182 304H

ASTM A182 304H WN Duplex Stainless Steel Flange RF 900# 26"-48" ASME B16.47 SER.B

1. Flange Specification:

2.304L Stainless Steel escription

Alloy 304/304H has good resistance to atmospheric corrosion, foods and beverages and to many organic

and inorganic chemicals in moderately oxidizing to moderately reducing environments. The high chromium

content of the alloy provides resistance to oxidizing solutions such as nitric acid up to 55% weight and up

to 176°F (80°C).

Alloy 304/304H also resists moderately aggressive organic acids such as acetic. The nickel present in the

alloy provides resistance to moderately reducing solutions such as pure phosphoric acid, whatever the

concentration, in cold solutions and up to 10% diluted hot solutions. The alloy can also operate successfully

in caustic solutions free of chlorides or fluorides at moderate temperatures.

Alloy 304/304H does not perform well in more highly reducing environments such as those containing

chlorides and sulfuric acid.

Alloy 304/304H performs well in fresh water service with low levels of chlorides (less than 100ppm). At

higher chloride levels the grade is susceptible to crevice corrosion and pitting. For successful

performance under these more severe conditions, higher molybdenum content is need such as

316/316L. Alloy 304/304H is not recommended for service in marine environments.

In most instances, the corrosion resistance of Alloys 304, 304L and 30H will be roughly equal in most

corrosive environments. However, in environments that are sufficiently corrosive to cause intergranular

corrosion of welds and heat-affected zones Alloy 304L should be used because of its low carbon content.

3.304H Stainless Steel WN Flange Packaging

304H Stainless Steel WN Flanges are widely used in various industries including petrochemical, oil and

gas, power generation, bulk liquid transportation, chemicals, pharmaceuticals, pulp and paper

manufacturing, textiles and others. All our 304H Stainless Steel WN Flanges are manufactured in

accordance with international standards. 304H Stainless Steel WN Flanges are packaged to ensure that

there is no damage during transit. In case of exports, standard export packaging is done in wooden cases.

All 304H Stainless Steel WN Flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On

special requests we can also, make custom marking on 304H Stainless Steel WN Flanges.

4.Delivery:
Port:
Tianjin/Shanghai/Ningbo
Lead Time :

5.Documentation

• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)

Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fittings for Huitong Group and assisting another subsidiary company of Huitong Group:Zhengzhou Huitong Machanical Equipment Co.,Ltd., in exporting machanical equipment.

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.,with the strong support of Huitong Group,and years'development and innovation, are more and more professional in technical service and can manufacure products with all kinds of material,shape and size. Especially in elbows, tee, reducer, flange and pipe cap etc., we have gained more than 20 product patent, and hundreds of technology patent. Also,we have gradually taken an ireplacable role in High-pressure,high-temperature and anti-corrosion area. With the continuous construction of engery in China,such as petrol gas,electric power,etc.,our company has become the purchasing center of whole set fittings for such projects.In 2009,a foreign trade team established,is manily engaged in oil gas and electric power projects abroad.By now, our products have been exported to

Canada,Malaysia,Parkistan,UAE, Eygpt,the Middle East countries, etc.. We have passed the qualification of ISO9001:2000 and API quality certification system. High-quality products and high-class service are well received by abroad customers in this industry. The unique diversified production line can offer you one-package serive, you can pruchase all complex products from us at one time. What's more, our sufficient material stock and conventional product stock can ensure you receive satisfied product in the shortest time.

With powerful financial strength,advanced managerial concept, excellent marketing service,strict quality control system and integrated marketing team,we would like to develop together with you hand in hand. Adhering to the operation principle of "faith first and clients foremost", we always supply high quality products, complete after-sales service and favorable prices. We sincerely hope to establish long-term cooperation with you on the basis of mutual benefits, reciprocity and common development.

People who interested in our products or want to get more information about us,contact us,please!Looking forward for your inquiry.