GRADE GUIDE · A333
ASTM A333 low-temperature pipe off-cuts
A333 is the pipe specification for low-temperature service: every heat is Charpy impact-tested cold, with Grade 6 — the common one — proven at −45 °C. It is the line pipe of LPG, refrigeration, and cold process systems where ordinary carbon pipe would turn brittle.
Also listed as: ASTM A333 Gr.6 · ASME SA333 Gr.6 · Gr.3 (−100 °C)
Live A333 stock
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 33.4 × 6.35 × 5635 mm · 23.87 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 355.6 × 9.53 × 5200 mm · 422.94 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 355.6 × 19.05 × 8600 mm · 1359.76 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 48.3 × 7.14 × 5790 mm · 41.96 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 33.4 × 9.09 × 6300 mm · 34.33 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 88.9 × 5.49 × 12000 mm · 135.52 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 88.9 × 11.13 × 3100 mm · 66.17 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 168.3 × 7.11 × 3160 mm · 89.31 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 114.3 × 6.02 × 4500 mm · 72.34 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 60.3 × 11.07 × 3100 mm · 41.66 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 273 × 21.44 × 5225 mm · 694.98 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 406.4 × 21.44 × 6670 mm · 1357.64 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 88.9 × 7.62 × 5370 mm · 82.02 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 273 × 25.4 × 1850 mm · 286.93 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 114.3 × 17.12 × 5000 mm · 205.15 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 323.8 × 17.48 × 3270 mm · 431.8 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 88.9 × 15.24 × 3150 mm · 87.21 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 60.3 × 8.74 × 4620 mm · 51.34 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 457 × 14.27 × 7070 mm · 1101.54 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 168.3 × 21.95 × 8700 mm · 689.23 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 168.3 × 18.26 × 1750 mm · 118.24 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 355.6 × 9.53 × 9960 mm · 810.09 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 168.3 × 10.97 × 8720 mm · 371.15 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative renderA333 · Pipe
Carbon steel · balance_piece
OD 48.3 × 5.08 × 5240 mm · 28.37 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Subject to Prior Sale and Final Availability Confirmation.
Carbon steel loses toughness as it cools; below its transition temperature a pressure line can fracture instead of leaking. A333 exists to push that boundary down and prove it by test — the mill certificate for each heat carries the impact values. Grade 6 covers the −45 °C band that takes in LPG storage, ammonia refrigeration and most cold-service piping in the region; Grade 3 extends to −100 °C where specified.
Visually the pipe is indistinguishable from A106, which is exactly why the certificate matters: an A333 off-cut without its MTC is just carbon pipe. Listings here show the certification badge, and the document is released to you once the order is confirmed.
Common questions
Why not just use A106 for a refrigeration line?
A106 carries no low-temperature impact guarantee — below roughly −29 °C the piping codes require impact-tested material, which is precisely what A333 certifies. The cost difference is small against the risk of brittle fracture.
What fittings and flanges match A333 Gr.6 pipe?
The low-temperature companions: A420 WPL6 butt-weld fittings and A350 LF2 forged flanges, keeping the whole joint impact-tested to the same temperature.
Is the mill certificate included with an off-cut?
Where the seller supplied one, the listing carries an MTC badge and the certificate is released after your order is confirmed. For low-temperature service, only buy badged pieces.