High-Pressure ASTM A182 F316 & A350 LF2 CL1 Threaded Pipe Caps for Oil & Gas Applications

When it comes to high-pressure threaded pipe fittings, reliability and compliance with global standards are key. At Haihao Group, we recently completed a precision manufacturing order for a Singaporean customer, supplying a series of ASTM A182 F316 & A350 LF2 CL1 forged threaded caps designed for critical applications in the oil, gas, and petrochemical industries.

Products Delivered:

3/4″ 3000# CAP SE (NPT)

Material: ASTM A182 Gr. F316 (Stainless Steel)

Standard: ANSI B16.11

Type: Threaded end (NPT), Socket End (SE)

Pressure Rating: 3000#

1 1/2″ 6000# CAP SE (NPT)

Material: ASTM A350 Gr. LF2 Class 1 (Carbon Steel)

Compliance: ANSI B16.11, NACE MR0175 / MR-01-75

Pressure Rating: 6000#

3/4″ 6000# CAP SE (NPT)

Material: ASTM A350 Gr. LF2 Cl.1

Features: High pressure resistance, impact toughness at low temperature

Application: Sour service, low-temperature pipelines

These pipe caps are engineered to seal the ends of high-pressure piping systems, offering secure closures while maintaining pressure integrity in harsh environments. The stainless steel F316 caps are ideal for corrosive environments, while the LF2 CL1 carbon steel versions are optimal for low-temperature and sour gas services, conforming to NACE MR-01-75 requirements.

Why Choose Haihao Group for Forged Threaded Pipe Fittings?

• Full Material Certification (MTC)
• NACE-compliant materials for sour service
• Compliance with ANSI/ASME B16.11 standards
• Pressure ratings up to 6000#
• Experienced export team serving clients in 100+ countries

Whether you need threaded stainless steel pipe caps or low-temperature carbon steel forged caps, Haihao Group can customize and deliver according to your exact specifications. We support small-batch production, rapid delivery, and full quality assurance including dimensional inspection and PMI testing.

Ready to Ship Globally

Haihao Group supplies a wide range of ASME B16.11 forged pipe fittings, including caps, elbows, tees, and unions. Our facilities are equipped to handle both standard and customized production with materials like A105, F316, F304, LF2, and more.

Contact us today for a quote or technical support. Whether you are building a pressure system in Southeast Asia, the Middle East, or Europe, we have the quality and expertise to support your project needs. Email:sales@haihaogroup.com