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API 5L X46 Pipe

Hot Rolled API 5L X46 Pipe, Carbon Steel High Yield Pipes for Oil and Gas Industries. API 5L Grade X46 indicates 63000 PSI minimum yield strength and 60000 PSI minimum ultimate tensile strength

API 5L X46 Line Pipe

ISO 3183 L320 — PSL1 / PSL2 · seamless and welded


API 5L X46 L320 PSL1 PSL2 line pipe

Savoy Piping Inc. supplies API 5L X46 line pipe (ISO 3183 L320) for oil and gas pipeline transportation.

API 5L Table 6 (PSL1 pipe body, guide): yield min 320 (46,400) MPa (psi), tensile min 435 (63,100) MPa (psi).

X46 PSL1 Seamless · X46 PSL2 Seamless · X46 PSL1 LSAW · X46 PSL2 LSAW · X46 Seamless Hub

What is API 5L X46?

X46 is defined by minimum yield strength (~46 ksi / 320 MPa). Always specify PSL1 or PSL2 and seamless vs welded on the order.

Also see: API 5L seamless line pipe hub · Carbon seamless hub · CS buttweld.

Typical applications

  • Oil and gas transmission / gathering lines
  • Onshore and offshore packages specifying X46 / L320
  • PSL2 toughness packages when required

Stock Range of API 5L X52 Pipes

API 5L X46 Pipe Specification API 5L / ISO 3183 Hot Rolled.
API 5L X46 Pipe Grades API 5L Grade B PSL1, PSL 2 / API 5L X42 PSL1, PSL 2 / API 5L X46 PSL1, PSL 2 / API 5L X52 PSL1, PSL 2 / API 5L X56 PSL1, PSL 2 / API 5L X60 PSL1, PSL 2 / API 5L X65 PSL1, PSL 2 / X70 PSL1, PSL 2 / API 5L X70 PSL1 / PSL2 / API 5L X80 PSL1, PSL 2 / ISO 3183 L245 PSL1, PSL 2, ISO 3183 L290 PSL1, PSL 2, ISO 3183 L320 PSL1, PSL 2, ISO 3183 L360 PSL1, PSL 2, ISO 3183 L390 PSL1, PSL 2, ISO 3183 L415 PSL1, PSL 2, ISO 3183 L450 PSL1, PSL 2, ISO 3183 L485 PSL1, PSL 2
API 5L X46 Pipe Type Seamless
API 5L X46 Pipe Outer Diameter Size 3/8" NB to 30" NB (Nominal Bore Size)
API 5L X46 Pipe Wall Thickness Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness
API 5L X46 Pipe Length 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size.
API 5L X46 Pipe Ends Plain Ends / Beveled Ends / Coupling
API 5L X46 Pipe Delivery Conditions As Rolled, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T
API 5L X46 Pipe Coating Epoxy Coating / Colour Paint Coating / 3LPE Coating.
API 5L X46 Pipe Other Testing NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, SWC, H2 SERVICE, IBR, PWHT etc.
API 5L X46 Pipe Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant API Standards including ASTM, ASME, API.
API 5L X46 Pipe Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment
API 5L X46 Pipe Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
API 5L X46 Pipe Shipment & Transportation By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
API 5L X46 Pipe Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

Savoy Piping Inc. is a leading supplier of API 5L Grade X46 Pipes originating from India. We specialize in delivering top-notch pipes to clients worldwide, ensuring their utmost satisfaction. Our extensive inventory comprises pipes stocked in NPS/NB dimensions, adhering to API 5L standards, and available in various thicknesses to meet the specific requirements of our clients. To guarantee the highest quality, and High Temperature all pipes undergo thorough inspection by our dedicanted in-house quality control department before they are dispatched to the clients. Moreover, our pipes come with complete traceability and are accompanied by a mill test certificate in accordance with EN 10204 3.1 standards.

API 5L 4th Edition Specification for Line Pipe

The ANSI / API 5L standard outlines the production requirements for two product levels, namely PSL1 and PSL2, of both seamless and welded steel pipes. These pipes are specifically designed for use in Pipeline involved in the transportation of petroleum and Natural Gas. In case the material is intended for a sour service Application, Annex H provides relevant guidelines. Similarly, for offshore service Applications, Annex J of the API 5L 4th Edition serves as a reference point.

API 5L X46 Pipe Delivery Condition

PSL Delivery Condition Pipe grade
PSL1 As-rolled, normalized, normalizing formed A
As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered or if agreed Q&T SMLS only B
As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered X42, X46, X52, X56, X60, X65, X70
PSL 2 As-rolled BR, X42R
Normalizing rolled, normalizing formed, normalized or normalized and tempered BN, X42N, X46N, X52N, X56N, X60N
Quenched and tempered BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X9Q, X100Q
Thermomechanical rolled or thermomechanical formed BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M
Thermomechanical rolled X9M, X100M, X120M
The suffice (R, N, Q or M) for PSL2 grades, belongs to the Stainless Steel grade

Ordering Information for API 5L X46 Pipes Tube

The purchase order must encompass various essential details, such as the quantity, PSL level, type or Grade, reference to API 5L, outside diameter, wall thickness, length, and any relevant annexes or additional requirements concerning chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coatings, or end finish.

Manufacturing Process for API 5L X46 Pipes

Type of Pipe PSL 1 PSL 2
Grade A Grade B X42 to X70 B to X80 X80 to X100
SMLS ✔ ✔ ✔ ✔ ✔
LFW ✔ ✔ ✔
HFW ✔ ✔ ✔ ✔
LW ✔
SAWL ✔ ✔ ✔ ✔ ✔
SAWH ✔ ✔ ✔ ✔ ✔

SMLS – Seamless, without weld
LFW – Low frequency welded pipe, 70 kHz
HFW – High frequency welded pipe, 70 kHz
SAWL – Submerge-arc welding longitudinal welded
SAWH - Submerge-arc welding helical welded

API 5L X46 Pipe Starting Material

In the Steel Products of pipes, the raw materials such as ingots, blooms, billets, coils, and Oil Sands or plates must undergo specific manufacturing processes. These processes include basic oxygen, and Shale Gas electric furnace, or open hearth, either individually or in conjunction with a ladle refining process. When manufacturing pipes classified as PSL2 Piping Specification, the steel used must be subjected to a fine grain practice, ensuring its quality. Additionally, it is crucial that the oil Refinery or plate used for PSL2 pipe does not contain any repair welds.

Chemical Composition for API 5L X46 PSL 1 pipe with t ≤ 0.984”

Steel Grade Mass fraction, % based on heat and product analyses a,g
C Mn P S V Nb Ti
max b max b max max max max max
Seamless Pipe
X46 0.28 1.40 0.3 0.3 d d d
Welded Pipe
X46 0.26 1.4 0.3 0.3 d d d
a. Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%,
b. For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for Mn is permissible, up to a maximum of 1.65% for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; and up to a maximum of 2.00% for grade L485 or X70.,
c. Unless otherwise agreed NB + V ≤ 0.06%,
d. Nb + V + TI ≤ 0.15%,
e. Unless otherwise agreed.,
f. Unless otherwise agreed, NB + V = Ti ≤ 0.15%,
g. No deliberate addition of B is permitted and the residual B ≤ 0.001%

Chemical Composition for API 5L X46 PSL 2 pipe with ≤ 0.984”

Steel Grade Mass fraction, % based on heat and product analyses Carbon Equiv a
C Si Mn P S V Nb Ti Other CE IIW CE Pcm
max b max max b max max max max max max max
Seamless and Welded Pipe
X46N 0.24 0.4 1.40 0.025 0.015 0.07 0.05 0.04 d,e,l 0.43 0.25
Welded Pipe
X46M 0.22 0.4 1.30 0.025 0.015 0.005 0.005 0.004 e,l 0.43 0.25
a. SMLS t>0.787”, CE limits shall be as agreed. The CEIIW limits applied fi C > 0.12% and the CEPcm limits apply if C ≤ 0.12%,
b. For each reduction of 0.01% below the specified maximum for C, an increase of 0.05% above the specified maximum for Mn is permissible, up to a maximum of 1.65% for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; up to a maximum of 2.00% for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2.20% for grades > L555 or X80.,
c. Unless otherwise agreed Nb = V ≤ 0.06%,
d. Nb = V = Ti ≤ 0.15%,
e. Unless otherwise agreed, Cu ≤ 0.50%; Ni ≤ 0.30% Cr ≤ 0.30% and Mo ≤ 0.15%,
f. Unless otherwise agreed,
g. Unless otherwise agreed, Nb + V + Ti ≤ 0.15%,
h. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 0.50% Cr ≤ 0.50% and MO ≤ 0.50%,
i. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.50% and MO ≤ 0.50%,
j. B ≤ 0.004%,
k. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% and MO ≤ 0.80%,
l. For all PSL 2 pipe grades except those grades with footnotes j noted, the following applies. Unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001%.

Tensile and Yield Strength of API 5L X46 PSL1 Pipes

Pipe Grade Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 1 Seam of Welded Pipe
Yield Strength a Tensile Strength a Elongation Tensile Strength b
Rt0,5 PSI Min Rm PSI Min (in 2in Af % min) Rm PSI Min
X46 46,400 63,100 c 63,100
a. For intermediate grade, the difference between the specified minimum tensile strength and the specified minimum yield for the pipe body shall be as given for the next higher grade.
b. For the intermediate grades, the specified minimum tensile strength for the weld seam shall be the same as determined for the body using foot note a.
c. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:
api psl2 equation
Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units
Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows
– For circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.
– For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
– For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch)

Tensile and Yield Strength of API 5L X46 PSL2 Pipes

Pipe Grade Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 2 Seam of Welded Pipe
Yield Strength a Tensile Strength a Ratio a,c Elongation Tensile Strength d
Rt0,5 PSI Min Rm PSI Min R10,5IRm (in 2in) Rm (psi)
Af %
Minimum Maximum Minimum Maximum Maximum Minimum Minimum
X46N,X46Q,X46M 46,400 76,100 63,100 95,000 0.93 f 63,100
a. For intermediate grade, refer to the full API5L specification.
b. for grades > X9 refer to the full API5L specification.
c. This limit applies for pies with D> 12.750 in
d. For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using foot a.
e. for pipe requiring longitudinal testing, the maximum yield strength shall be ≤ 71,800 psi
f. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:
api psl2 equation
Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units
Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows
– For circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.
– For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
– For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch
g. Lower values fo R10,5IRm may be specified by agreement
h. for grades > x9 refer to the full API5L specification.

Tolerances Outside Diameter, Out of roundness and wall thicknes of API 5L X46 Pipes

Specified Outside Diameter D (in) Diameter Tolerance, inches d Out-of-Roundness Tolerance in
Pipe except the end a Pipe end a,b,c Pipe except the End a Pipe End a,b,c
SMLS Pipe Welded Pipe SMLS Pipe Welded Pipe
< 2.375 -0.031 to + 0.016 – 0.031 to + 0.016 0.048 0.036
≥2.375 to 6.625 0.020D for 0.015D for
+/- 0.0075D – 0.016 to + 0.063 D/t≤75 D/t≤75
By agreement for By agreement for
D/t≤75 D/t≤75
>6.625 to 24.000 +/- 0.0075D +/- 0.0075D, but max of 0.125 +/- 0.005D, but max of 0.063 0.020D 0.015D
>24 to 56 +/- 0.01D +/- 0.005D but max of 0.160 +/- 0.079 +/- 0.063 0.015D for but max of 0.060 0.01D for but max of 0.500
For For
D/t≤75 D/t≤75
By agreement By agreement
for for
D/t≤75 D/t≤75
>56 As agreed
a. The pipe end includes a length of 4 in ate each of the pipe extremities
b. For SMLS pipe the tolerance apply for t≤0.984in and the tolerances for the thicker pipe shall be as agreed
c. For expanded pipe with D≥8.625in and for non-expanded pipe, the diameter tolerance and the out-of-roundness tolerance may be determined using the calculated inside diameter or measured inside diameter rather than the specified OD.
d. For determining compliance to diameter tolerance, the pipe diameter is defined as the circumference of the pipe in any circumferential plane divide by Pi.
Wall thickness Tolerances a
t inches inches
SMLS pipe b
≤ 0.157 -1.2
> 0.157 to < 0.948 + 0.150t / – 0.125t
≥ 0.984 + 0.146 or + 0.1t, whichever is the greater
– 0.120 or – 0.1t, whichever is the greater
Welded Pipe c,d
≤ 0.197 +/- 0.020
> 0.197 to < 0.591 +/- 0.1t
≥ 0.591 +/- 0.060
a. If the purchase order specifies a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range.
b. For pipe with D≥ 14.000 in and t≥0.984in, the wall thickness tolerance locally may exceed the plus tolerance for wall thickness by an additional 0.05t provided that the plus tolerance for mass is not exceeded.
c. The plus tolerance for wall thickens does not apply to the weld area
d. See the full API 5L spec for full details

Hydrotest of API 5L X46 Pipes

Pipe to withstand a hydrostatic test without leakage through the weld seam or the pipe body. Jointers need not be hydrostatic tested provide the pipe sections used were successfully tested.

Bendtest of API 5L X46 Pipes

No cracks shall occur in any portion of the test piece and not opening of the weld shall occur.

Acceptance Criteria of API 5L X46 Pipes

  • EW pipes D 12.750 in
  • ≥ X60 with T≥0.500in, there shall be no opening of the weld before the distance between the plates is less than 66% of the original outside diameter. For all grades and wall, 50%.
  • For pipe with a D/t 10, there shall be no opening of the weld before the distance between the plates is less than 30% of the original outside diameter.
  • For other sizes refer to the full API 5L Specification

CVN Impact Test for API 5L X46 PSL2 Pipes

Many PSL2 pipe sizes and grades require CVN. Seamless pipe is to be tested in the body. Welded pipe is to be tested in the Body, Pipe Weld and heat affected zone (HAZ). Refer to the full API 5L specification for the chart of sizes and grades and required absorbed energy values.

Other Related Prodcuts to API 5L X46 Pipes

API 5L B PIPES API 5L B PSL1 PIPES API 5L B PSL2 PIPES
API 5L X42 PIPES API 5L X42 PSL1 PIPES API 5L X42 PSL2 PIPES
API 5L X46 PIPES API 5L X46 PSL1 PIPES API 5L X46 PSL2 PIPES
API 5L X52 PIPES API 5L X52 PSL1 PIPES API 5L X52 PSL2 PIPES
API 5L X56 PIPES API 5L X56 PSL1 PIPES API 5L X56 PSL2 PIPES
API 5L X60 PIPES API 5L X60 PSL1 PIPES API 5L X60 PSL2 PIPES
API 5L X65 PIPES API 5L X65 PSL1 PIPES API 5L X65 PSL2 PIPES

Frequently asked questions — API 5L X46 Pipe

What is API 5L X46?

API 5L X46 is line pipe with about 46 ksi (320 MPa) minimum yield, commonly mapped to ISO 3183 L320.

What strength does X46 require?

Per API 5L Table 6 (PSL1): yield min 320 (46,400) MPa (psi), tensile min 435 (63,100) MPa (psi). Confirm edition/PSL on the PO.

PSL1 or PSL2 for X46?

Follow the datasheet. PSL2 adds tougher chemistry, CVN toughness and more documentation than PSL1.

Seamless or welded X46?

Seamless for many smaller OD packages; LSAW/DSAW/HSAW for larger diameters when specified.

API 5L X46 Pipe is Exported and Supply to Following Countries

We Export API 5L X46 Pipe to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc