ASTM A53/A106 Seamless Pipe
ASTM A53 carbon steel pipe covers seamless, welded, black, and hot-dipped galvanized pipe.
| Standard | BS 1387, BS EN 10297, BS 4568, BS EN10217, JIS G3457 |
| Grade | 10#-45#, Cr-Mo alloy, 15NiCuMoNb5, 10Cr9Mo1VNb, A53-A369 |
| Out diameter | 21.3 - 610 mm |
| Wall thickness | 2 - 50 mm |
| Section Shape | Round |
| Application | Fluid Pipe |
| Surface Treatment | varnished,cap,marking |
| Certification | API |
| Carbon Steel Pipe | ASTM A53/106/API 5L B |
| ST37/ST44 Precision Seamless Steel Pipe | DIN 2448/2391/1629/17100 |
| DIN 2391/2448/1629,ST37/ST52 steel pipe | ST37/ST52 |
| Hot Rolled Seamless Steel Pipe | ASTM A 53/106/API 5L B |
| Cold Drawn Seamless Steel Boiler Tube | ASTM A106/DIN 17175/2448 |
| Carbon Seamless Steel Pipe | ASTM A53/106/API 5L B |
ASTM A53 carbon steel pipe covers seamless, welded, black, and hot-dipped galvanized pipe.
ASTM A53 GRADE A&B
This specification covers seamless and welded black and hot-dipped galvanized steel pipe in nominal size 1/8” in. To 20 in. Inclusive (3.18mm-660.4mm) with nominal (average) wall thickness .
ASTM A106 GRADES A, B & C
This specification covers seamless carbon steel pipe for high temperature service in nominal size 1/8 in. To 26 in. Inclusive (3.18mm-660.4mm)with nominal (average) wall thickness .
Grade A Carbon 0.25% max. Manganese 0.27 to 0.93%
Grade B Carbon 0.30% max. Manganese 0.29 to 1.06%
Grade C Carbon 0.35% max. Manganese 0.29 to 1.06%
All grades have same values for Sulphur 0.058% max. Phosphorus 0.048% max. Silicon 0.20% min.
Chemical Composition (%):
| Standard | Grade | C | Si | Mn | P | S | Ni | Cr | Cu | Mo | V |
| ASTM A53M | A | =0.25 | - | =0.95 | =0.05 | =0.045 | =0.40 | =0.40 | =0.40 | =0.15 | =0.08 |
| B | =0.30 | - | =1.2 | =0.05 | =0.045 | =0.40 | =0.40 | =0.40 | =0.15 | =0.08 |
Mechanical Properties:
| Standard | Grade | Tensile strength (Mpa) | Yield strength (Mpa) | Elongation (%) | |
| ASTM A53M | A | =330 | =205 | See table 3 of ASTM A53 | |
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
Mo |
V |
|
ASTMA106M |
A |
=0.25 |
=0.10 |
0.27-0.93 |
=0.035 |
=0.035 |
=0.40 |
=0.40 |
=0.40 |
=0.15 |
=0.08 |
|
B |
=0.30 |
=0.10 |
0.29-1.06 |
=0.035 |
=0.035 |
=0.40 |
=0.40 |
=0.40 |
=0.15 |
=0.08 |
|
|
C |
=0.35 |
=0.10 |
0.29-1.06 |
=0.035 |
=0.035 |
=0.40 |
=0.40 |
=0.40 |
=0.15 |
=0.08 |
Mechanical Properties:
|
Standard |
Grade |
Tensile strength (Mpa) |
Yield strength (Mpa) |
Elongation (%) |
|
ASTM A106M |
A |
=330 |
=205 |
See table 4 of ASTM A106 |
|
B |
=415 |
=240 |
||
|
C |
=485 |
=275 |
varnished,cap,marking
Before Painting
Preparation of painting specification involves understanding environmental factors, location of piping (indoor or outdoor), insulation requirements, operating and design temperatures. It may also involve local rules and regulations as well as availability of materials.
Painting Workflow
- Ensure all tests are performed on piping system before starting painting work.
- Clean painting surface to remove oils, grease, dirt.
- Ensure proper room temperature and humidity levels.
- Use hand tools, machine tools, shot blasters etc to clean surface as per relevant standards and project requirements.
- Apply primer within 4 hours of surface preparation.
- Apply paint coats after previous coats have dried up, as per instructions of paint manufacturer.
Components Requiring Painting
• Carbon steel ducts, furnaces and stacks require painting.
• All un-insulated equipments like columns, vessels, drums, heat exchangers, pumps, compressors, electrical panels, motors etc. require painting.
• All structural componets like steel members, platforms, ladders,handrails etc. required painting.
Types of Painting Methods
• Painting by Brush
• Painting by Air Spray Painting Machine
• Painting by Airless Spray Painting Machine
Surfaces that should not be painted.
Non-ferrous materials like Aluminium are not required to be painted. Also other surfaces like Valve Stems etc. Checkout this complete list of surfaces that should not be painted.
Characteristics of Piping Paint Material
Paint material used for painting pipes and equipments must adhere to certain requirements as per project specification .Check out these typical requirements for various types of primers and paints.
Typical Piping Painting Systems
Check out these combinations of typical piping painting systems which comprise of surface preparation, primer coats and top coats.
Humidity Requirements During Painting
Proper weather conditions surrounding the place of painting work is essential w.r.t. humidity levels and room temperature. Check out these humidity and temperature requirements.
Qualification Criteria for Painting Contractor
Painting contractor needs to posses these qualifications for good quality of painting work in time.
Inspection and Testing Procedure
Sound inspection and testing procedure must be in place to ensure good quality of painting work. Check out this article for complete information on inspection and testing procedure.
