MCCCD Official Course Competencies:

SUN136  19964-19966

Socket and Butt Weld Pipe Fabrication

1.

Identify and explain types of socket weld piping materials and fittings. (I)

2.

Read and interpret socket weld piping drawings. (II)

3.

Determine pipe lengths between socket weld fittings. (III)

4.

Fabricate socket weld fittings to pipe. (IV)

5.

Identify butt weld piping materials and fittings. (V)

6.

Read and interpret butt weld piping drawings. (VI)

7.

Cut and bevel plate steel using an oxyacetylene torch. VII)

8.

Cut holes and pipe using an oxyacetylene torch. (VII)

9.

Prepare pipe ends for fit-up. (VIII)

10.

Determine pipe lengths between fittings. (IX)

11.

Select and install backing rings. (X)

12.

Use of and care for clamps and alignment tools. (XI)

13.

Perform alignment procedures for specific types of fittings. (XII)

MCCCD Official Course Outline:

SUN136  19964-19966

Socket and Butt Weld Pipe Fabrication

I. Socket weld piping materials and fittings

A. Materials

1. Carbon steel

2. Stainless steel

3. Galvanized pipe

B. Sizes

1. Outside diameter

2. Inside diameter

3. Wall thickness

4. Manufacturer's weight

C. Common fittings

1. 90 degree elbow

2. Cross

3. Tee

4. 45 degree elbow

5. Coupling

6. Swage

D. Miscellaneous fittings

1. Unions

2. Caps

3. Reducers

E. Special branch fittings

1. Sockolets

2. Elbolets

3. Atrolets

F. Flanges

1. Pressure ratings

2. Installation methods

II. Piping drawings

A. Types

1. Double-line

2. Single-line

3. Isometric

4. Plan

5. Elevation

B. Symbols

1. 90 degree ell

2. 45 degree ell

3. Union

4. Cap

5. Tee

6. Lateral

7. Reducers and swages

8. Ball valves

9. Regular-type, wrench-operated plug valve

10. Hyperseal-type, wrench operated plug valve

11. Gate valve

12. Globe valve

13. Check valve

14. angle valve

15. Motor or control valve

C. Line numbers

D. Specifications book

III. Pipe length determination

A. Take-out

B. Center-to-end dimensions

C. Proper placement

D. Method

1. Enter-to-center

2. Center-to-face

3. Face-to-face

IV. Socket weld pipe fitting fabrication and alignment

A. Cutting pipe

B. Preparing pipe and fittings

C. Alignment of fittings

1. 90 degree elbow to pipe

2. Squaring pipe into 90 degree elbow

3. Flange to pipe

4. 45 degree elbow to pipe using levels

5. 45 degree elbow to pipe using squares

6. Pipe joined by couplings

V. Butt weld piping materials and fittings

A. Pipe sizes

1. Outside diameter

2. Inside diameter

3. Wall thickness

4. Manufacturer's weight

B. American Society for Testing and Materials (ASTM) identification system

C. Materials

1. Carbon steel

2. Stainless steel

D. Fittings

1. Elbows and return bends

2. Branch connections

3. Caps

4. Reducers

5. Flanges

VI. Butt weld piping drawings

A. Types

1. Double-line

2. Single-line

3. Isometric

B. Symbols

C. Line numbers

D. Specifications book

VII. Oxyacetylene cutting and beveling

A. Cutting equipment

B. Setting up equipment

1. Procedure

2. Safety precautions

C. Lighting an oxyacetylene torch

1. Procedure

2. Safety precautions

D. Cutting

1. Plate steel

2. Holes

3. Pipe

E. Beveling plate steel

VIII. Pipe ends preparation

A. Preparing the edges

1. Chamfering

2. Beveling

B. Cleaning the surfaces

1. Grinder inspection

2. Grinder operation

IX. Pipe length determination

A. Calculating take-out

1. General dimensions

2. Formulas for field calculations

B. Spacing between pipes and fittings

C. Calculating pipe length methods

1. Center-to-center

2. Center-to-face

3. Face-to-face

X. Backing rings

A. Purpose

B. Common types

1. Type CCC

2. Type CC

3. Type C

4. Plain

XI. Clamps and alignment tools

A. Alignment devices

1. Angle iron jigs

2. Shop-made aligning dogs

3. Lever-type clamps

4. Hydraulic clamps

5. Chain-type clamps

B. Other

XII. Alignment procedures

A. Internal misalignment

B. Proper alignment procedures

1. Straight pipe

2. 45 degree elbow

3. 90 degree elbow

4. 90 degree corner

5. Pipe to flange

6. Pipe to tee