ASTM A105 A350 LF2 / LF3 Carbon Steel Pipe Fittings Forged Steel Fittings

Carbon steel pipe fittings can be divided into forged steel fittings and butt weld fittings. ASTM A105 and A350 LF2 / LF3 are common grades of carbon steel material, and commonly used to manufacture forge steel flange and fittings of small diameter piping. This carbon steel material grade is used for ambient- and higher-temperature service in pressure systems.

Carbon Steel Socket Weld Fittings Types

• 90 Degree Elbow
• 45 Degree Elbow
• Equal & Reducing Tee
• Socket Weld Union
• Equal & Reducing Cross
• Socket Weld Lateral Tee
• Full & Half Coupling
• Socket Weld Union
• Socket Weld Cap

Carbon Steel Threaded Pipe Fittings Types

• 90 Degree Elbow
• 45 Degree Elbow
• Threaded Pipe Union
• Equal & Reducing Tee
• Threaded Plug
• Equal& Reducing Cross
• Threaded Bushing
• Full and Half Coupling
• Threaded Pipe Cap
• Threaded Nipple

Markings on Forged Steel Pipe Fittings

1. Size
2. Rating
3. Material Grade
4. Thread Type
5. Standard
6. Heat Number

Specification of Carbon Steel Forged Pipe Fittings

Standard for Class 3000 Pipe Fittings

ASME B16.11

This Standard covers ratings, dimensions, tolerances, marking and material requirements for socket-welding and Threaded Forged Fittings.

MSS SP-83

Class 3000 and 6000 Pipe Unions, Socket Welding and Threaded

MSS SP-95

This Standard Practice covers dimensions, finish, tolerances, marking, and material for carbon steel and alloy steel Swaged Nipples (male end reducing fittings), NPS 1/4 through NPS 12 and Bull Plugs (hollow or solid male closures) NPS 1/8 through NPS 12.

ASTM A105 & A350 LF2 Chemical Composition

ASTM A105 & A350 LF2 Mechnical Properties

Zizi Engineering Co., Ltd is a leading industrial pipe fittings and flanges supplier for construction, petrochemical and oilfield customers.
We engaged in the manufacture and export of industrial pipe fittings for 9 years, our products have been sold to 37 countries around the world. We have a modern and professional manufacturing plant, established two warehouses near the harbor one after another. They are the base for our ability to offer high quality products and fast delivery.

Our products mainly are butt weld fittings, forged pipe fitings and forged steel flanges in stainless steel, carbon steel and alloy steel. They are produced according to ASME/ANSI American standards, DIN Germany Standards, JIS Japanese standards or as customer required. Those products are widely used in petrochemical industry, shipbuilding, oil field in ocean, electric power or city building.

Since we are founded, we are concentrated to be a professional global manufacture company with best products and service. Eventually we get some achievements after years of harding working and presistence. 

We will always insists on the managing objective of " quality first, service supreme, reasonable price". On the basis of continuously perfection the current products, our company persistently innovates upon the productive technology, provides vast customers with all kinds of superior new goods. We are willing to sincerely cooperate with friends from all walks of life to create a better future.