Alloy 690 has the ability to excellent resistance to intergranular corrosion and stress corrosion cracking, mainly used for pressurized water reactor nuclear power plant steam generator tube material. PWR steam generator tubes materials through a development process, including 304 austenitic stainless steel, alloy 600, alloy 800 and alloy 690. Service for 600 alloy corrosion failure studies show that intergranular corrosion and intergranular stress corrosion cracking is a major problem. 690 alloy as a PWR steam generator tube material, from the 1990s has not been put into use since the report found damaged.
Main applications of inconel 690
690 alloy is mainly used for pressurized water reactor nuclear power plant steam generator tube material is the core technology of the steam generator. At present, China has been running a PWR nuclear power plant unit, the only one to use the Qinshan 800 alloy, Qinshan, Daya Bay and Ling Ao Nuclear Power Station 690 alloy used as a steam generator tube material. Most of PWR nuclear power plant under construction and planning are also used as alloy 690 steam generator tube material. However, at present the country has 690 alloy tube running with PWR basically purchased from abroad. 690 alloy tubes foreign production company French Valinox, Sweden Sandvik and Sumitomo. Domestic intentional production and have produced 690 alloy pipe company has long-established special materials and precious silver Special Steel Tube Co., Ltd. September 25 morning, in Nansha District, Guangzhou City, east of the town Huangge Electric (Guangzhou) Heavy Machinery Co. assembly plant, along with the Oriental heavy machine technician will make domestic Baosteel 690 alloy U-shaped tube slowly penetrated Fangchenggang Nuclear Power Unit 1 1 steam generator "heart" to complete the nuclear power 690 alloy U-shaped tube of domestic applications since the first successful installation of nuclear power plant in China. China marks the first time the core of nuclear steam generator "Made in China."
After Processing And Before Packing
1. Chemical Compositon Inspection
3.Metallurgical Microscope Inspection.
4.Physical Property Inspection
6.Heterogeinity Of Carbides
Packing & Delivery
Packing: Usually in wooden case.
Delivery: About 45 days.
1 Q:Do you accept the sample order? A: Yes, we accept the sample order. If you order the small piece in stock, it is free.
But we do not pay for the freight cost.
2Q: How long is your delivery time? A: Usually 45 to 60 days after your down payment, it also according to the material requirement and the quantity you ordered.
3 Q: What is your terms of payment. A: Payment less or equal 10000USD,100% T/T in advance. Payment more than 1000USD, 30% T/T in advance, balance before shippment. Also accept the L/C at sight.
5.Q:What is your working time? A:Monday-Friday : 8:00AM-17:00PM (Beijing time, GMT+08.00) While by whatsapp you can contact me anytime if I am awake up.
1) Honest: we will strictly adhere to the contract, you will get the exact quality and quantity
from us. We never receive any complain from the clients for the quantity and weight. 2) Competitive price with shipment in time. 3) Strictly control on the quality. 4) More than 16 years experience in the export. 5) Best service after sale: We will be responsible for any disputes and problems occured after
shipment, we assure you that we will be responsible to the end once our service starts.