ASTM A420 WPL6 Low Temperature Carbon Steel Elbow Fittings

Charpy V-notch impact qualified at -45°C

Tougher than standard A234 WPB (no low-temperature impact requirement, rated ≥-20°C), helping low-temperature pipeline projects pass third-party inspection and avoid rework caused by non-compliant material.

Tensile strength ≥485MPa, yield strength ≥275MPa

A balanced strength-to-toughness ratio suited to high-pressure, low-temperature service, reducing leak and structural-failure risk and lowering long-term maintenance cost.

MOQ as low as 1 pc, size 1/2"-48" covered

Suitable for both sample orders and full project-scale bulk orders, shortening your procurement decision cycle for phased site delivery.

Raw material: A333 Gr.6 seamless pipe

Fully compatible with A350 LF2 flanges, letting you standardize material specification across the whole project and reduce dissimilar-material welding compliance risk.

Multiple surface treatments available

Sand-blast painting, hot-dip galvanizing, or FBE coating - selectable based on your project's climate and corrosion-protection class.

Dimensioned to ASME B16.9, fully traceable

Produced to a globally recognized dimensional standard, so your engineering team can select directly from the standard handbook with minimal back-and-forth.

Low-temperature toughness comes from dual control of material and process: WPL6 limits maximum carbon content (≤0.30%) and applies normalizing / normalizing-and-tempering heat treatment to refine grain structure and lower the brittle transition temperature, so the elbow's Charpy V-notch absorbed energy at -45°C still meets the required standard, avoiding brittle-fracture failures in cold service.

Key difference vs. standard A234 WPB elbow: A234 WPB is suited to ambient-to-medium-high temperature service (≥-20°C) and typically does not require low-temperature impact testing, at a lower price point. WPL6 is purpose-built for low-temperature service and must pass -45°C impact testing, making it the better fit for LNG and low-temperature chemical projects where brittle-fracture risk is a concern. Selection should be based on your pipeline's actual Minimum Design Metal Temperature (MDMT).

All elbows are produced using hot push and cold press forming from ASTM A333 Gr.6 seamless steel pipe, backed by our in-house push-forming machines and press equipment, covering the full 1/2"-48" size range and full Sch10-Sch80 wall thickness range for both bulk and custom orders.

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These are the three main surface treatments currently offered. For specific applicable standards or combined corrosion-protection requirements, please state your project's climate conditions in your inquiry so our team can recommend the right option.

LNG / Natural Gas

Liquefied natural gas transport and low-temperature storage piping are highly sensitive to brittle fracture - ordinary carbon steel can crack suddenly at ultra-low temperatures. WPL6 elbows, qualified by -45°C Charpy V-notch impact testing, deliver stable low-temperature structural integrity throughout liquefaction, storage, and outbound transfer.

Petrochemical

Low-temperature process piping in ethylene and propylene plants runs at sustained sub-zero temperatures, where the wrong material choice creates long-term operating risk. WPL6 elbows cover a wide -45°C to +300°C service range, reducing material-failure probability across the plant's lifecycle.

Energy / Air Separation

Low-temperature steam, water treatment, and air separation equipment piping also face cold-service demands. WPL6 elbows pair with A333 Gr.6 pipe and A350 LF2 flanges, helping standardize material specification and simplify equipment selection and acceptance.

Carbon steel fittings

Production workshop

Packaging & delivery

Black-painted packaging

Tianjin Baode Steel Co.,Ltd was established in 2006 (formerly Cangzhou Junde Steel Pipe Co.,Ltd), officially renamed in 2019. The company mainly produces seamless steel pipe, ERW steel pipe, LSAW steel pipe, and SSAW steel pipe, and operates a dedicated pipe fitting factory in Yanshan County, Cangzhou City, producing carbon steel, stainless steel, and alloy steel elbows, tees, reducers, flanges, and other fittings.

Partner manufacturer Hongcheng Pipe Industry Co., Ltd was established in 1992, covers 100,000 square meters, and currently employs 520 staff (including 150+ engineers and technical personnel). Annual production of various pipe fittings exceeds 20,000 tons, with pipe material throughput exceeding 50,000 tons, supported by 420 sets of key equipment including push-forming machines, press machines, large heat-treatment furnaces, beveling machines, sawing machines, tee extruders, clamp hammers, and large sandblasting machines.

Products are exported to more than 40 countries and regions including North America, South America, Southeast Asia, the Middle East, and Africa, and the company holds ISO9001, ISO14001, ISO45001, and AAA Credit Enterprise certifications, along with a pressure pipeline special equipment manufacturing license, Hebei Province metrology assurance qualification certificate, China Datang Group network member factory certificate, China Chemical Equipment Designated Production Enterprise certificate, China Power Parts Network member factory certification, and China Petrochemical Material Supply Network member certification.

ISO9001

ISO14001

ISO45001

AAA Credit Enterprise