Recent content by Thuhuongengineer

Hi Friends, My project have material ASTM A312 UNS08904. Pls give your advise about consumable for GTAW and SMAW process. Thanks

Hi Friends, Welders 6G can be weld Fill and Cap pass of joint 6GR?

Hi friends, The firt time i hear about STRA test. Pls hepl me give your advice about this test. STRA test is carried out to determine what?

Hi Gents, Pls see thi video in youtube: http://www.youtube.com/watch?v=UtVlSWCJJoE. My project, we need to joint copper to copper by bazing capillary. This is the fist time i see this process. I dont have experience, Pls see this video and give me your advice: 1. Which method clean suface, how...

Hi Gents, This is weld neck flange. Attach picture for you refer

sorry gents, I have misstake Tee replace Pipe Pipe Tee-CuNi to Flange-CuNi

Hi Friends, Our project had serious problem. All weld joint between Pipe-CuNi to Flange-CuNi had defect crack in Flange side (Pipe side no problem). I would like give you some information to you give me advice: Base: CuNi Thickness: 7 mm Welding Process: GTAW Welding...

Hi pradipgoswami Existing PQR: + Base metal: SA106 GrB + Thickness: 8.74 mm + Welding process: GTAW + Consumable: ER70S-6 + PWHT: No + Mechaical test: Tensile, Bend test, CVN, Macro, Hardness + Hardness test result (As picture) Now material: ASTM A106 GrB + NACE MR00175

Hi Friends, Our project has one kind of materials is Carbon Steel-NACE. I know that this is a kind of Carbon Steel desgin with NACE standards. I checked in the ASME that it has no effect on PQR whether Carbon steel is NACE or not NACE. However, Client still insist that we must Re-qualify PQR...

Hi GTAW, Welders weld the spiral seam in site. Tubular were fixed horizontal.

I know 6G can cover all position but i want to know exactly this joint (sloping 40 degree between axis tubular) is 3G or 5G follow QW 461- ASME IX

Hi friends, i have tubular OD=1100 mm, welding spiral (sloping 40 degree between axis tubular) accoding to ASME IX. I dont know position of this joint: 5G or 3G.. Pls give me advice.

Hi Friends, We qualified PQR inconel UNS 6625 weld to low temp Carbon Steel (A333 Gr 6). All mechanicate passed except Root bend test. The defect lack of fusion at boundary have appeared manny time. We try many time but still similar defect. Would like give some information for your study...

when we qualify PQR, we will record all the value of interpass in all pass (Root, Hot, Fill, Cap). We will choose the biggest value among all the value (called A) According to ASME IX, in WPS we will add more 56 degree to this biggest value of interpass, so Maximun interpass temperature in WPS...

Hi friend, I have to weld CuNi to Carbon Steel (API 5L X52), Butt weld, thickness 5-7mm. Which is welding consumable? Which is Process (GTAW or Brazing..) Which is parameter (Heat treament, Pre-heat.....) Pls give me advice.