L-shaped section steel – cnmarinesteel.com

L-shaped section steel for Shipbuilding & Offshore

High-strength L-shaped steels designed for ship hull frames, decks, and offshore structures.
Certified by ABS, LR, BV, DNV, CCS — with reliable supply and fast delivery.

Product Overview

Marine L-shaped steel, also known as shipbuilding L section, is a hot-rolled steel profile commonly used in ship hull structures, decks, bulkheads, and offshore platforms. Its L-shaped cross-section provides high structural strength, efficient load-bearing capacity, and excellent weldability.
At Shandong Xinpeng Steel, we supply marine-grade L-shaped steels that fully comply with international ship classification standards. With a wide range of dimensions, certified quality, and flexible delivery options, our products are trusted by shipyards and offshore engineering companies worldwide.

Technical Standards & Dimensions

Technical Standards

Available Grades: A, B, D, E; AH32 / AH36 / AH40; DH32 / DH36 / DH40; EH32 / EH36 / EH40
Standards: ASTM A131, EN 10067, GB/T 9945
Certificates: ABS, LR, BV, DNV, CCS
Inspection: Mill Test Certificate (EN 10204 3.1/3.2), SGS / BV / Intertek

Dimensions & Quick Specs

Bulb Height: 60 – 430 mm
Thickness: 4 – 17 mm
Sectional Area: 8 – 430 cm²
Weight: 7 – 400 kg/m
Length: 6 – 18 m (custom cut available)
Surface: As rolled, shot-blasted, primed, galvanized
MOQ: 20–25 tons (1x20ft container)

Product Advantages

Advanced High-Pressure Descaling Technology

Utilizing multiple channels of advanced high-pressure descaling technology, fully meeting the technical standards of PSPC in the international shipbuilding industry.

Professional TMCP Rolling Technology

By applying precise rolling control with surplus cutting edges, the final rolling temperature is strictly managed under the recrystallization temperature of austenite, ensuring comprehensive optimization of product performance.

Double Straightening + Strong Straightening

Achieving excellent straightening accuracy with double and strong straightening processes, ensuring the straightness tolerance of each shipbuilding section is less than 1‰, reaching the world’s advanced level.

Intelligent Inspection System for Shipbuilding Sections

Independently developed intelligent inspection system for shipbuilding sections, enabling full-process monitoring and quality control of steel section production.

Chemical Composition of Bulb Flat Steel (%, Ladle Analysis)

Grade	C (max)	Si (max)	Mn (max)	P (max)	S (max)	Cu (max)	Nb/V/Ti (max)
AH36	0.18	0.50	0.90–1.60	0.035	0.035	0.35	0.02–0.05
DH36	0.18	0.50	0.90–1.60	0.035	0.035	0.35	0.02–0.05
EH36	0.18	0.50	0.90–1.60	0.035	0.035	0.35	0.02–0.05

* Small amounts of Nb, V, Ti are permitted for strength improvement.

Mechanical Properties of Bulb Flat Steel

Grade	Yield Strength (MPa, min)	Tensile Strength (MPa)	Elongation (%)	Impact Test*
AH36	355	490–620	≥21	0°C, longitudinal, min 34 J
DH36	355	490–620	≥21	-20°C, longitudinal, min 34 J
EH36	355	490–620	≥21	-40°C, longitudinal, min 34 J

* Impact test temperatures: AH36 (0°C), DH36 (-20°C), EH36 (-40°C).

Certified Quality for Global Shipyards

✅Classification societies: ABS, LR, BV, DNV, CCS

✅Inspection & testing: Mill Test Certificate (EN 10204 3.1/3.2), ultrasonic test, third-party inspections (SGS, BV, Intertek)

✅Standards: ASTM A131, EN, GB/T

Why Choose Us

Specialized in Marine Steel

We focus exclusively on shipbuilding and offshore steel solutions, not general steel trading.

Certified by Major Societies

Full approvals from ABS, LR, BV, DNV, CCS — ensuring global compliance and trust.

Complete Size Range

Wide availability of plates, bulb flats, L-sections, and angle steel with flexible stock options.

Fast Delivery

Quick shipment from stock or mill production, supported by major Chinese ports.

Quality Assurance

Full MTC (3.1/3.2) and third-party inspections by SGS, BV, or Intertek provided upon request.

Customized Processing

Services include cutting, CNC processing, priming, shot-blasting, and galvanizing.

Marine L-Shaped Steel FAQ

What is the difference between equal and unequal L-shaped steel?

Equal L steel has equal leg lengths, while unequal L steel has different leg lengths, suitable for different structural applications.

What ship classification certificates can you provide?

ABS, LR, BV, DNV, CCS certificates can be provided with each order.

Do you provide mill certificates and inspection reports?

Yes, MTC 3.1/3.2 and third-party inspection (SGS, BV, Intertek) are available.

Provide excellent after-sales service methods and strategies.

✅ ABS / LR / BV / DNV / CCS Certified
✅ 7*24 hours timely response to customer needs
✅ Professional engineers provide personalized solutions
✅ Possess professional technical means to improve after-sales service efficiency