01
Seamless Pipe and Tube
Cold-drawn or extruded to ASTM B622, with outside diameter up to 88.9 mm.
Request Availability →Hastelloy B-2 Pipe and Tube
Seamless and welded tubular product for reducing-acid circuits, where oxidants and mid-temperature heat both end service life.
Three Tubular Routes Quoted
Seamless, welded, and exchanger tube each carry their own specification, so one enquiry covers the whole run.
Quench Control After Welding
Welded assemblies travel with the cooling record that keeps ductility in the joint.
Bore Finish Agreed First
Pickled, bright annealed, or polished bores are settled before the tube is drawn.
PRODUCT OVERVIEW
About Hastelloy B-2 Pipe and Tube
Hastelloy B-2 Pipe and Tube carries the UNS N10665 grade in seamless and welded forms. Hydrochloric and sulfuric acid leave the bore intact while the stream stays reducing. Because chromium stays near zero, an oxidant in the circuit ends service life fast.
Tubular product from this grade reaches plants as seamless tube, welded pipe, and welded exchanger tube. The Hastelloy B-2 hub carries the alloy background, and the Hastelloy B-2 Bar and Rod and Hastelloy B-2 Plate and Sheet pages cover the other two routes.
PRODUCT FEATURES
Key Features of Hastelloy B-2 Pipe and Tube
Hastelloy B-2 pipe and tube carries the UNS N10665 grade in seamless, welded, and exchanger-tube form. The nickel-molybdenum chemistry resists hydrochloric and sulfuric acid while the stream reduces, and it tolerates no oxidant at all. Ni4Mo orders between 540 and 815 °C, so welded joints need either a fast quench or a route that keeps heat out. Southerly Alloy works as a professional supplier and exporter of tubular product to ASTM B622, B619, and B626.
Hastelloy B-2
Bore-Side Hydrochloric Duty
Moreover, concentration and temperature both stay inside the envelope while the stream reduces.
01
Reducing Acid Range
Consequently, non-oxidizing sulfuric, phosphoric, and organic acids remain inside the working envelope.
02
Stress-Cracking Immunity
Nickel dominance keeps chloride-bearing media from cracking the tube wall.
03
Welded Pipe as Delivered
Carbon at 0.02% or less limits weld-zone precipitation, so many joints need no further anneal.
04
Seamless Range to the B622 Limit
Therefore, seamless tube stops at 88.9 mm outside diameter, which is the ceiling the standard sets.
05
Welded Pipe to Schedule 80S
Meanwhile, welded pipe covers Schedule 5S through 80S at 8 in nominal and larger.
06
Exchanger Tube Dimensions
In addition, welded exchanger tube runs from 3.2 to 88.9 mm outside diameter.
07
Mid-Temperature Exclusion
Ni4Mo ordering between 540 and 815 °C governs the heat treatment we schedule after welding.
08
WHY CHOOSE US
Why Choose Hastelloy B-2
Hastelloy B-2 pipe and tube orders hinge on two things. First, the standard the mill certifies against and the inspection level behind it. Then, the weld detail and the bore finish your drawing calls for.
01
Standard Confirmed First
Consequently, we check the ordered tube against B622, B619, or B626 before the quotation leaves.
02
Documents Tied to the Heat
EN 10204 3.1 certificates carry chemistry, tensile results, and the pressure-test record.
03
Bore Finish to Order
In addition, pickled, bright annealed, or polished bores follow the service you describe.
04
Export Packing for Tube
We cap the ends and crate the lengths, then quote FOB, CIF, or DAP against your port.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Tube making starts with a hollow that must stay free of the phases Ni4Mo forms at mid temperature. Consequently, the mill solution anneals and quenches every lot before the final pass.
01
Billet Preparation
We cut and inspect the billet before the piercing line takes it.
02
Piercing and Extrusion
The press forms a hollow shell from the heated billet.
03
Hot Rolling
Pilger or plug mills reduce wall thickness toward the ordered gauge.
04
Cold Drawing
Drawing brings the tube to final diameter and wall over a mandrel.
05
Solution Annealing
The mill holds the tube near 1065 °C so precipitated phases dissolve again.
06
Rapid Quenching
A water quench locks the single-phase structure in place before ordering begins.
07
Descaling and Pickling
Acid cleaning leaves a bore free of scale for acid-plant service.
08
Pressure and Dimensional Release
Pressure testing, diameter checks, and wall measurement clear the lot.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Tubular capacity sits on the same site as our bar and flat-product lines, so a mixed order ships together. Meanwhile, the quench line sets the pace on made-to-order campaigns.
20,000+ m²
Works Footprint
Piercing, drawing, and quench lines share one site.
50+
Tube Line Machines
Hot rolling, cold drawing, and grinding equipment sit in this base.
600 Tons
Monthly Tubular Output
Seamless and welded routes draw on the same melting campaign.
30+
Metallurgists Available
Welding procedure and heat-treatment questions reach a specialist.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Release evidence follows the product document on your order. Chemistry runs against the N10665 window, and pressure testing accompanies the tube where the standard calls for it.
01
Per-Heat Spectrometer Check
We compare molybdenum, iron, and carbon readings with the ASTM limits.
02
Pressure and Nondestructive Testing
Hydrostatic or eddy-current testing runs on the ordered condition.
03
Wall and Diameter Measurement
The inspection bay measures wall thickness, outside diameter, and straightness.
04
Heat-Anchored Certificates
Each report names the melt, so your QA team can trace one lot end to end.
PRODUCT FORMS
Available Product Forms
Tubular product splits into three routes, and each one names its own specification. Consequently, the order should state the route alongside the size.
02
Welded Pipe
B619 pipe in Schedule 5S through 80S, at 8 in nominal and larger.
Request Availability →
03
Welded Tube
B626 exchanger tube from 3.2 to 88.9 mm outside diameter.
Request Availability →
04
U-Bend Tube
Bent bundles for exchangers, with bend radius agreed at quotation.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Tubular parts carry acid through a plant, so the medium and its temperature set the working life. Meanwhile, hydrochloric service dominates the order book.
Discuss Your Application →
01
Hydrochloric Acid Transfer
Lines and exchangers carrying HCl from dilute streams to boiling.
02
Sulfuric Acid Coolers
Tube bundles inside reducing sulfuric acid circuits.
03
Phosphoric Acid Evaporators
Heating tubes in wet-process acid plants.
04
Acetic Acid Columns
Reboiler and condenser tubing in reducing organic acid service.
05
Pickling Line Coils
Immersion heaters and circulation tubing in steel pickling.
06
Reactor Dip Tubes
Injection and sampling lines inside reducing-acid reactors.
07
Scrubber Recirculation
Spray and drain lines for acidic flue-gas treatment.
08
Pharmaceutical Acid Lines
Transfer tubing for acid-bearing solvent recovery service.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
Limits below come from the tubular documents, which carry the same composition table as the rod specification. Iron and chromium stay low because they drive Ni4Mo formation. The mill certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 26.0–30.0% |
| Iron (Fe) | 2.0% max. |
| Chromium (Cr) | 1.0% max. |
| Cobalt (Co) | 1.00% max. |
| Manganese (Mn) | 1.0% max. |
| Carbon (C) | 0.02% max. |
| Silicon (Si) | 0.10% max. |
| Phosphorus (P) | 0.04% max. |
| Sulfur (S) | 0.03% max. |
Mechanical Properties
The seamless document sets a lower yield floor than the rod specification does. Therefore, the table below reflects seamless tube, and welded product follows its own document.
| Product Form | Condition | Tensile Strength | Yield Strength, 0.2% Offset | Elongation |
|---|---|---|---|---|
| Seamless pipe and tube, ASTM B622 | Solution annealed and descaled | ≥110 ksi (760 MPa) | ≥45 ksi (310 MPa) | 40% |
B619 welded pipe and B626 welded tube set their own acceptance minima. Consequently, we quote those numbers from the edition named on your purchase order.
Physical Properties
Typical room-temperature values below support design work rather than acceptance testing. In addition, the alloy stays non-magnetic in the annealed condition.
| Property | Value |
|---|---|
| Density | Approx. 9.22 g/cm³ |
| Melting range | Approx. 1330–1380 °C |
| Modulus of elasticity | Approx. 217 GPa |
| Thermal conductivity at 0 °C | Approx. 11.1 W/m·K |
| Thermal conductivity at 100 °C | Approx. 12.2 W/m·K |
| Electrical resistivity at 20 °C | Approx. 1.37 µΩ·m |
| Thermal expansion, 20–93 °C | Approx. 10.3 µm/m·K |
| Magnetic behaviour | Non-magnetic in the annealed condition |
Standards
ASTM B622 governs seamless pipe and tube, and its reach stops at 88.9 mm outside diameter. Specifically, welded product moves to B619 for pipe and B626 for exchanger tube. Meanwhile, the designations below identify the same melt.
| Standard | Product or Application |
|---|---|
| ASTM B622 / ASME SB622 | Seamless pipe and tube to 88.9 mm outside diameter |
| ASTM B619 / ASME SB619 | Welded pipe in Schedule 5S, 10S, 40S, and 80S and larger |
| ASTM B626 / ASME SB626 | Welded tube, 3.2–88.9 mm outside diameter |
| ASTM B829 | General requirements for seamless pipe and tube |
| ASTM B775 / B751 | General requirements for welded pipe and welded tube |
| ASTM B335 / ASME SB335 | Rod in the same grade |
| ASTM B333 / ASME SB333 | Plate, sheet, and strip in the same grade |
| ASTM B564 / ASME SB564 | Forgings |
| ASTM B366 / ASME SB366 | Factory-made wrought fittings |
| DIN 17751 | Seamless tube in wrought nickel alloys |
| ISO 6207 | Nickel alloy seamless tube |
| UNS N10665 | Unified Numbering System designation |
| W.Nr. 2.4617 / NiMo28 | European designation for Alloy B-2 |
| GB/T 15007 NS322 | Chinese designation |
| SAE AMS | No aerospace specification covers this grade |
The tubular documents come from ASTM International, and their text settles any acceptance question.
Dimensions
Ranges below follow the scope each document defines, so the seamless ceiling and the welded sizes differ. For that reason, name the route alongside the size on the enquiry.
| Product Form | Outside Diameter | Wall Thickness |
|---|---|---|
| Seamless pipe and tube, ASTM B622 | Up to 88.9 mm | 0.5–12.7 mm |
| Welded pipe, ASTM B619 | Schedule 5S through 80S, 8 in nominal and larger | Per schedule |
| Welded tube, ASTM B626 | 3.2–88.9 mm | 0.41–3.7 mm |
| U-bend tube | As drawn, bent to drawing | 0.7–6 mm |
Surface Finishes
A bore finish decides how easily the tube cleans and how long it lasts in acid service. In short, we agree it with the order rather than assume a default.
| Surface Condition | Typical Use |
|---|---|
| Solution annealed and pickled | Standard delivery for hydrochloric and sulfuric acid service |
| Bright annealed | Scale-free bore for instrument and clean circuits |
| Polished bore | Reduced roughness for product-contact lines |
| Mechanically descaled | Welded product cleaned without acid pickling |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 7 Simple Steps
One coordinator carries your B-2 tube order from enquiry to shipment. We settle the acid duty, the route, and the welding detail before drawing begins.
1
Send the Duty and Sizes
Give the acid, its concentration, the diameter, and the wall.
2
Name the Route
Confirm seamless, welded, or exchanger tube against the drawing.
3
Review the Offer
Price, lead time, and the test set arrive in one reply.
4
Approve the Specification
Grade, size, inspection level, and delivery terms go on record before drawing.
5
Produce and Test
We draw, anneal, quench, and pressure test the tube to the ordered condition.
6
Release and Pack
Certificates and export papers travel with the tube under the agreed terms.
7
Confirm Delivery
Finally, the shipping desk tracks the load and mails the document set before it lands.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The seamless tube for our acid cooler arrived with the pressure-test record attached, so our inspector cleared the bundle in one visit.”
★★★★★
“Welded B-2 pipe held its ductility after site fabrication, which our previous grade could not manage.”
★★★★★
“Pickled bores and capped ends meant the lengths went straight into the rack without rework.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM documents cover Hastelloy B-2 pipe and tube?
B622 for seamless product, B619 for welded pipe, and B626 for welded exchanger tube.
How large can seamless B-2 tube be supplied?
Up to 88.9 mm outside diameter, which is the ceiling ASTM B622 sets.
Can Hastelloy B-2 tube handle hydrochloric acid?
Yes, at every concentration up to boiling, provided no oxidant enters the circuit.
Does welded B-2 pipe need a post-weld anneal?
Not always. However, severe acid duty still calls for a solution anneal and a fast quench.
Which filler metal suits Hastelloy B-2 welding?
ERNiMo-7 wire to AWS A5.14 or ENiMo-7 electrodes to AWS A5.11.
What is your MOQ for Hastelloy B-2 pipe?
One length covers most stocked sizes.
What are your trade terms for Hastelloy B-2 pipe?
FOB is standard, and EXW or CIF quotes follow once you name the destination.
How is the price of Hastelloy B-2 pipe calculated?
Mainly on weight, with the nickel and molybdenum share fixed at the order date.
What is the lead time for Hastelloy B-2 pipe?
Stocked sizes ship in 7-15 days. Meanwhile, made-to-order drawing runs about 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 certificates ship with every lot, and 3.2 third-party endorsement comes on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the acid, its concentration, the outside diameter, and the wall you need. Our engineers then reply with price, lead time, and the test set. We confirm the route and bore finish before drawing, so the lot you approve is the lot that ships.
Trial lengths are welcome, and a single piece of most stocked sizes proves the finish before a plant-wide order.
