P250GH/C22.8 DN10/DN50/DN80/DN100 NP10/16 RF Weld Neck Flange,WN Flanges
P250GH/C22.8 DN10/DN50/DN80/DN100 NP10/16 RF Weld Neck Flange,WN Flanges
A weld neck flange is a type of steel flange designed to transfer stresses to the pipe to reduce high stress concentrations at the base of the flange.
Compared with other types,weld neck flanges are know for their tapered hub and gentle transition from flange thickness to pipe wall thickness. They are deformation-resistant, and are normally used for high pressure,high or low temperature conditions.
| Size | Weld neck flange:1/4"-160" DN8-DN4000 |
| Pressure | America Series:Class 150 ,Class 300, Class 600, Class 900A ,Class 1500,Class 2500. Europe Series:PN2.5,PN6,PN10,PN16,PN25,PN40,PN63,PN100,PN160, PN250,PN320,PN400. |
| Flange Facing Types | America Series:Flat face(FF),Raised face(RF),Tongue(T),Groove(G),Female(F),Male(M),Ring type joints face(RJ/RTJ) Europe Series:Type A(Flat Face),Type B(Raised Face),Type C(Tongue),Type D(Groove),Type E(Spigot),Type F(Recess),Type G(O-Ring Spigot),Type H(O-Ring Groove) |
| Material | Carbon steel: ASTM A105,ASTM A105N,GB 20,C22.8. Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911 Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6 High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70 |
| Standards | ASME ANSI B16.5,ASME ANSI B16.47. API 605,API 6L. MSS SP 44 CSA Z245.12 EN1092-1,EN1759-1. DIN2630,DIN2631,DIN2632,DIN2633,DIN2634,DIN2635,DIN2636, DIN2637,DIN2638. BS1560,BS 4504,BS 10. AFNOR NF E29-200-1 ISO7005-1 AS2129 JIS B2220 UNI 2276. UNI 2277.UNI 2278 .UNI 6089 .UNI 6090 |
| Industrial Processes | Die forging,Machining. |
| Application for weld neck flanges | Natural gas,chemical,petroleum,ship building,marine,paper making, metallurgy, electric, power, boiler , etc. |
P250GH/C22.8 DN10/DN50/DN80/DN100 NP10/16 RF WN FlangeOf Haihao Group:
All goods should be packed in sea worthy export plywood cases & pallets, streched wrapped with nylon.
Question 1: How many staff working on your plant?
Answer: 660 workers and staff members with a strong technical force, including 26 engineers, 48 assistant engineers and 68 technicians.
Question 2: What kind of certificate do you have?
Answer: ISO,API,ABS CERTIFICATES.
Question 3: What market experiences do you have?
Answer: We have experiences of working in Russia,USA ,Germany Korea,Vietnam, India ,Indonesia, Malaysia, Philippines,Iran, Kazakhstan, Romania, Costa Rica, Georgia, Kuwait,Turkmenistan, Ukraine and Jordan etc. market.
Question 4: What kind of largest diameter seamless and welded pipe fittings available to producing in your workshops ?
Answer: ELBOW( largest diameter seamless 30",welded 96" )
TEE( largest diameter seamless 24",welded 96" )
REDUCER( largest diameter seamless 24",welded 96" )
Question 5: Do you have the laboratory in your factory?
Answer: Yes, we have.
Question 6: Can you supply FASTENERS?
Answer: Yes, we can supply Bolt, U-bolt and screw nut.
Question 7: What test do you usually do?
Answer: After production, we will make NDT inspection. About elbows, usually we use ultrasonic test by a certain percentage. If client needs special requirement,we will make as per their requirement.
Question 8: The period of production a volume about 300 tn of products;
Answer: About 300 tons products, it costs 20-30 days,and 40 days including painting,marking and packing.
Question 9: The whole production capacity of your own production facilities;
Answer: About DN15-DN6000 flange,18000 tons per year;DN15-DN1200 elbow, reducer and tee,15000 tons per year.
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