ASME B16.5-2003 4-1, 4-2, 4-3

Interpretation: 4-1

Subject: Hub Diameter

Date Issued: March 13, 1998

File: B16-97-011

Question: According to ASME B16.5-1996, does the diameter of hub dimension X as shownin Table 9, Fig. 9, correspond to the theoretical intersection of the angles line that represents theoutside of the hub with the line that represents the back of the flange?

Reply: Yes. However, note this is a dimension without a tolerance.

Interpretation: 4-2

Subject: Tolerance

Date Issued: March 24, 1998

File: B16-98-003

Question: Does ASME B16.5-1996 have required tolerances for a lapped, slip-on, or socket-welding flange for the overall length through hub?

Reply: No.

Interpretation: 4-3

Subject: Blind Flange Material

Date Issued: March 24, 1998

File: B16-98-004

Question (1): May blind flanges covered by ASME B16.5-1996 be produced from plate?

Reply (1): Yes.

Question (2): May blind flanges produced from plate be marked in accordance with ASMEB16.5-1996?

Reply (2): Yes, provided that they meet all the requirements of ASME B16.5-1996.

Question (3): Does ASME B16.5-1996 have criteria for the selection of materials?

Reply (3): No. See para. 5.1.1.

I-2

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