ASTM A53 A106 A333 Carbon Steel Pipe
Carbon steel pipe in ASTM A53, A106 and A333 grades is supplied in seamless and welded forms, with round, square and rectangular sections available from a single stock list. This allows buyers who would otherwise split one project across a seamless mill, a welded mill and a plate processor to consolidate pipe, plate and coil into one order, one inspection and one shipment. Jialu Metal holds these grades across pressu
- Seamless and welded forms available for A53, A106 and A333 grades, so material choice matches service requirements
- Round, square and rectangle sections supplied from one order, reducing the need for multiple suppliers
- One contract, one inspection and one shipment for mixed-grade carbon steel pipe scopes
- Grade coverage spans general pressure, structural and low-temperature service applications
Mill certificates issued against the ordered grade and standard. Third-party inspection available on request.
What This Material Is For
Carbon steel pipe in ASTM A53, A106 and A333 grades is supplied in seamless and welded forms, with round, square and rectangular sections available from a single stock list. This allows buyers who would otherwise split one project across a seamless mill, a welded mill and a plate processor to consolidate pipe, plate and coil into one order, one inspection and one shipment. Jialu Metal holds these grades across pressure, structural and low-temperature service applications, so a project requiring A53 for structural framing, A106 for process piping and A333 Gr.6 for cryogenic service can be sourced under one contract.
Why Buyers Choose It
- Seamless and welded forms available for A53, A106 and A333 grades, so material choice matches service requirements
- Round, square and rectangle sections supplied from one order, reducing the need for multiple suppliers
- One contract, one inspection and one shipment for mixed-grade carbon steel pipe scopes
- Grade coverage spans general pressure, structural and low-temperature service applications
- Third-party inspection available on request, booked at order stage to align with production schedule
Where It Is Used
- Structural framing and support systems using A53 Grade B in round and square sections
- Process piping in refineries and chemical plants using A106 Grade B for moderate pressure and temperature
- Cryogenic service lines in LNG and petrochemical facilities using A333 Grade 6 for low-temperature toughness
- Water and gas transmission lines in municipal and industrial projects using A53 and A106 in welded and seamless forms
- Industrial conveyance and mechanical support structures using square and rectangular carbon steel pipe
- Mixed-standard piping systems where A53, A106 and A333 grades appear on the same drawing set
Who It Is For
- EPC contractors managing mixed-grade piping scopes for a single plant or pipeline
- Fabricators sourcing structural and process pipe in one material family for consistent handling
- Industrial plant owners requiring low-temperature pipe for cryogenic systems
- Municipal and infrastructure projects needing water and gas line pipe in multiple shapes and grades
- Manufacturers building conveyance systems or mechanical frames using square and rectangular pipe
Problems It Solves
- Splitting one pipe scope across multiple mills due to grade and form limitations
- Delays caused by separate inspection dates and shipment schedules for different pipe types
- Inconsistent material handling when sourcing round, square and rectangular sections from different suppliers
- Difficulty in meeting mixed ASTM A53, A106 and A333 callouts on one drawing set
- Late grade substitutions when one mill cannot supply a required size or form within the project window
Technical Features
- Seamless and welded production routes available for A53, A106 and A333 grades
- Round, square and rectangle sections supplied in the same order, with consistent material properties
- A53 Grade A and B, A106 Grade A and B, and A333 Grade 6 covered across both seamless and welded forms
- Wall thickness and diameter range suitable for structural, pressure and low-temperature service
- End preparation available for cutting, beveling and threading upon request
Grades Standards And Size Range
Values below come from the published product data. Anything not listed is confirmed per enquiry.
| ASTM A53 Grades | A, B |
|---|---|
| ASTM A106 Grades | A, B |
| Types | Seamless, Welded |
| Shapes | Round, Square, Rectangle |
| Outside Diameter and Wall Thickness | TBC |
| Production Methods | Hot-rolled, Cold-drawn, ERW, Seamless Piercing |
Materials
- Carbon steel for general pressure and structural service in A53 and A106 families
- Low-carbon steel with improved toughness for cryogenic service in A333 Grade 6
- Welded carbon steel pipe suitable for non-critical pressure and conveyance applications
- Seamless carbon steel pipe for high-pressure, high-temperature or sour-service applications
Manufacturing Route
Quality Control
- Chemical composition and mechanical property checks against the ordered ASTM specification
- In-house CNAS-certified laboratory conducts routine testing on material batches
- Mill certificates issued per purchase order, stating grade, standard and test results
- Third-party inspection available on request, bookable at order stage
- Non-conforming material can be returned and refunded within one month of receipt
Customisation Options
- Grade and standard selected per line item, so one order can mix A53, A106 and A333 callouts
- Shape and size specified at order stage, including round, square and rectangle sections
- OEM service accepted for branding and marking
- Packing and labeling arranged to suit destination port and inspection regime
How It Compares With The Alternatives
| Seamless pipe | Seamless is stronger and more reliable in high-pressure or high-temperature service; welded is more cost-effective for low-pressure structural and conveyance duty |
|---|---|
| Welded pipe | Welded pipe is cheaper and faster to produce; seamless is preferred where a weld seam is not allowed by code or inspection |
| A333 Grade 6 | A333 Gr.6 is required for cryogenic service; A53 and A106 are not suitable below -20°C due to reduced toughness |
Buying Guide
- Start with the service requirement—pressure, temperature, or low-temperature—to select the correct grade
- For structural or conveyance use, A53 Grade B is standard; for process piping, A106 Grade B is typical
- For cryogenic applications, specify A333 Grade 6 and confirm the required test temperature
- Send the size table with the enquiry, as availability varies by diameter and wall thickness
- Book third-party inspection at order stage to avoid delays after production
Questions About ASTM A53 A106 A333 Carbon Steel Pipe
What grades of carbon steel pipe do you supply?
ASTM A53, A106 and A333 Grade 6, available in seamless and welded forms.
Can you supply round, square and rectangular sections?
Yes. Round, square and rectangle sections are all available in the specified grades.
Do you supply both seamless and welded pipe?
Yes. Seamless and welded forms are available for A53, A106 and A333 grades.
Can one order mix different grades and shapes?
Yes. Mixed-grade and mixed-shape scopes are standard and supported on one purchase order.
What certifications do you hold?
The company holds ISO 9001, API Q1, PED, CE, API 5L, API 5CT and API 5DP, with an in-house CNAS-certified laboratory.
Can we arrange third-party inspection?
Yes. Third-party inspection is available on request and is best booked at order stage.
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