Re: [MW:6922] Butt Welding on I and H Section

Dear

Pl refer IS9595 for edge preparation.

NDT depends on requirements and for your ref it's stated below :

INSPECTION AND TESTING

All structural-steel materials and fabrication shall be subject to inspection by contractor. Contractor's inspector shall have free access to the materials and to all parts of the steel structure which is being fabricated. Material which is found to be defective or contrary to this specification and requirements of the purchase order shall be rejected. At least a three-day notice will be given when the material is ready for inspection. Where preerection is specified, the members of the structure or parts thereof shall be laid out on the shop floor for inspection. Welds shall be inspected by the subcontractor according to the provisions of regulatory requirements IS: 822, with respect to technique, equipment, acceptance criteria and personnel qualifications. All welds shall be subject to random visual inspection .In addition, the following special requirements shall apply to welding inspection. All critical butt welds (full penetration) shall have a full visual inspection and shall also be inspected by either radiographic or ultrasonic methods as follows:

Radiography:

Make one (1) spot radiograph per 500 mm of butt weld. Take the radiographs on the flange sections of the beam with a minimum of one (1) radiograph per welded connection, in accordance with regulatory requirements.

Ultrasonic:

Entire length of butt weld, including the webs, shall be tested. The ultrasonic examination shall be done in accordance with regulatory requirements.

All full penetration corner and T-joint welds, used in beam column connections shall have full visual inspection and shall also be inspected by ultrasonic methods in accordance with the thickness schedule below: All fillets welds 25 mm or over in size shall be inspected by magnetic particle testing or liquid penetrant inspection for 10% of their length.

G.S.Arora

--- On Wed, 8/9/10, Vijay <k.vijayaraj@gmail.com> wrote:

From: Vijay <k.vijayaraj@gmail.com>
Subject: [MW:6919] Butt Welding on I and H Section
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Wednesday, 8 September, 2010, 12:12 PM

Dear All,

We want to weld and joint a beam, we planned to do butt welding on it.
How to make butt weld profile for Beam. If piping means we can make
bevel angle 37.5 degree and we make fit up. For beam what standard we
should follow?? How to make bevel angle? what type of NDT is
preferred??

Thanks in advance.

Regards,
Vijay

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