Views: 2 Author: Site Editor Publish Time: 2024-12-05 Origin: Site
API 5L Grade B Seamless Pipe is a common pipe used for oil and gas transmission. In these API 5L Grade B Pipe, the prefix API stands for American Petroleum Institute specification. API 5L Grade B Seamless Pipe is a steel pipe used for transportation in the petroleum and natural gas industry.
API 5L Grade B Seamless Pipe Specification
Processing Method | Seamless and Welded |
Size Range | 1/8"- 48" / DN6 - 1200 |
Thickness Schedule | SCH 10, SCH 20, SCH 40, STD, XS, SCH 100, SCH 120, SCH 160, XXS |
Length | 6m or 12 m or Random |
Standard | ASME B36.10M |
Surface Treatment | Blasting and Painting , Epoxy Powder FBE, 2PE, 3PE Coating |
Material Grade | ASTM A106B / A53, API 5L B / X42 / 46 / 52 / 56 / 60 / 65 / 70, A333 GR 6 |
API 5L Grade B Carbon Steel Pipe is Most Common Use Material
API 5L Grade B, ASTM A106 Grade B and A53 B, these three are most common use material for the industries where refers pipeline construction or oil and gas, liquid transmissions.
ASTM 106 pipe refers to the carbon steel pipe manufactured in hot rolled or cold drawn (rolled) seamless.
ASTM A53 pipe covers welded and seamless steel pipe, in carbon black material and some cases in hot dipped galvanized (zinc coated).
Difference Amoung API 5L Grade B, ASTM A106 Grade B, ASTM A53 Grade B, more details view here.
Chemical Composition
CHEMICAL | LIMITS | C | Mn | P | S | Cu | Ni | Cr | Mo |
API 5L Gr.B PSL1 | MIN | ||||||||
MAX | 0.28 | 1.20 | 0.03 | 0.03 | 0.5 | 0.5 | 0.5 | 0.15 | |
ASTM A53 GR B | MIN | ||||||||
MAX | 0.30 | 1.20 | 0.050 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | |
ASTM A106B | MIN | 0.29 | |||||||
MAX | 0.30 | 1.06 | 0.035 | 0.04 | 0.40 | 0.400 | 0.40 | 0.15 |
Mechanical Property
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
ASTM API 5LB | 415 min | 240 min | |
ASTM A53 GR B | 415 min | 240 min | 30 min |
ASTM A106 GR B | 415 min | 240 min | 22 min |
API 5L Grade B Equivalent
Standard | SEAMLESS | WELDED | Other standards |
API 5L Gr B PSL1 Equivalent | EN 10216-1 P265 | EN 10217-1 P265 | BS 3601 430 |
API 5L Grade B PSL2 Equivalent | EN 10216-1 P265 | EN 10217-1 P265 | BS 3601 430 |
API 5L Grade B Seamless Pipe Dimension
API 5L Grade B seamless pipe is a general purpose carbon steel pipe used in different industries. Its diameter ranges from 1/8” to 48”, and wall thickness ranges are SCH 10, SCH 20, SCH 40, STD, XS, SCH 100, SCH 120, SCH 160, XXS.
Grade B Carbon Steel Pipe Thickness Schedule
DN | NPS | OD | SCH20 | SCH30 | STD | SCH40 | SCH60 | XS | 80 |
6 | 1/8 | 10.3 | - | 1.45 | 1.73 | 1.73 | - | 2.41 | 2.41 |
8 | 1/4 | 13.7 | - | 1.85 | 2.24 | 2.24 | - | 3.02 | 3.02 |
10 | 3/8 | 17.1 | - | 1.85 | 2.31 | 2.31 | - | 3.20 | 3.20 |
15 | 1/2 | 21.3 | - | 2.41 | 2.77 | 2.77 | - | 3.73 | 3.73 |
20 | 3/4 | 26.7 | - | 2.41 | 2.87 | 2.87 | - | 3.91 | 3.91 |
25 | 1 | 33.4 | - | 2.90 | 3.38 | 3.38 | - | 4.55 | 4.55 |
32 | 11/4 | 42.2 | - | 2.97 | 3.56 | 3.56 | - | 4.85 | 4.85 |
40 | 11/2 | 48.3 | - | 3.18 | 3.68 | 3.68 | - | 5.08 | 5.08 |
50 | 2 | 60.3 | - | 3.18 | 3.91 | 3.91 | - | 5.54 | 5.54 |
65 | 21/2 | 73.0 | - | 4.78 | 5.16 | 5.16 | - | 7.01 | 7.01 |
80 | 3 | 88.9 | - | 4.78 | 5.49 | 5.49 | - | 7.62 | 7.62 |
90 | 31/2 | 101.6 | - | 4.78 | 5.74 | 5.74 | - | 8.08 | 8.08 |
100 | 4 | 114.3 | - | 4.78 | 6.02 | 6.02 | - | 8.56 | 8.56 |
API 5L Grade B ERW Pipe Tolerance
OD Tolerance | WT Tolerance | ||||
A, B | X42 ~ X70 | ||||
D<60.3milimeter | +0.41/-0.40milimeter | D<73milimeter | +20%/-12.5% | D<73milimeter | +15%/-12.5% |
D>=60.3milimeter | +0.75/-0.40milimeter | D>=73milimeter | +15%/-12.5% | D>=73milimeter | +15%/-12.5% |
Difference Between PSL1 and PSL2
PSL1 | PSL2 | |
CVN impact (Charpy) testing | None required | Required for all grades |
Certification | Certificates when specified per SR15 | Certificates (SR 15.1) mandatory |
Nondestructive inspection of seamless | Only when purchaser specifies SR4 | SR4 mandatory |
Hydrostatic Test | Required | Required |
Traceability | Traceable only until all tests are passed, unless SR15 is specified | Traceable after completion of tests (SR 15.2) mandatory |
PSL is the abbreviation of product standard grade. Standard grades of pipeline products include PSL1 and PSL2. It can also be said that the quality standards are divided into PSL1 and PSL2. PSL2 is higher than PSL1, which not only has different inspection standards, but also has different standards of chemical properties and mechanical strength.
