×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

API 650, Shell Plate Horizontal Weld

API 650, Shell Plate Horizontal Weld

API 650, Shell Plate Horizontal Weld

(OP)
Dear Friend,

I have one doubt regarding the Shell Plate Horizontal Weld.

Bottom shell course is 22mm thk and adjacent above shell course is 16mm thk, So my question is if we are chamfer the 22mm plate to 18mm and Weld this 18mm to 16mm with double bevel butt weld. So what will be the chamfer slope?? For double bevel butt weld in this case what angle should maintain for the weld?

Tanks in Advance

RE: API 650, Shell Plate Horizontal Weld

See Figure 5.2 for typical weld configurations. API-650 doesn't specify a transition bevel in this case, so it doesn't specify the slope. I think ASME and API-620 specify slopes for that chamfer if used.

RE: API 650, Shell Plate Horizontal Weld

If you align the plate centerlines, there won't be as much

RE: API 650, Shell Plate Horizontal Weld

Like IFR's already stated. If this may be a centerline-stacked configuration you should be able to split the difference and not worry about a transition with those numbers. If however you require the inside to be flush then I believe the 4-1 TAPER would apply as you are out over 1/8" of an inch on the outside.

RE: API 650, Shell Plate Horizontal Weld

There is no requirement in API 650 to bevel the thicker plate in a horizontal joint if the thicker plate is the lower plate in the joint. The default condition is center stacked. In contrast to vertical shell joints, horizontal shell joints have little stress in them. Horizontal joints do have to have complete penetration and fusion.

RE: API 650, Shell Plate Horizontal Weld

(OP)
Thanks all for your advice smile

So when we joint(Horizontal) 8mm plate to 6mm plate , Single bevel Butt joint or Square Butt joint which one is better??? API 650 didn't specify the Type of weld.

RE: API 650, Shell Plate Horizontal Weld

For manual SMAW or GMAW I'd use a 45 degree bevel on the outside of the upper plate, no bevel on the lower plate, a 1/8" land on the upper plate and an 1/8" gap between the plates. But your weld procedures should cover this and may be different.

RE: API 650, Shell Plate Horizontal Weld

(OP)
Thank You IFRs smile

RE: API 650, Shell Plate Horizontal Weld

In USA, the traditional method is to use 'key-plates' that give a 2-4mm gap, and leave the plates square cut [no bevel] E6010 or SAW is used for the weld [deeply penetrating methods], and the 2nd side is backgouged to sound weldmetal using CAC 'air-arc'. Works very well, much faster than beveling.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources