【正文】 .....................6二、鋼管制造業(yè)概況 ................................................................................7鋼管產(chǎn)品分類 ....................................................................................................7世界焊接鋼管產(chǎn)品的生產(chǎn)和市場格局 ............................................................8我國焊接鋼管產(chǎn)品的產(chǎn)銷情況 ........................................................................9焊接鋼管分類 ..................................................................................................10三、鍍鋅鋼管、鋼塑復(fù)合管、螺旋焊管市場的基本情況 ..................10產(chǎn)品競爭格局和市場化程度 ..........................................................................10（1）鍍鋅鋼管、鋼塑復(fù)合管生產(chǎn)企業(yè)眾多，產(chǎn)品競爭較為激烈 ............................10（2）石油天然氣輸送用螺旋焊管生產(chǎn)企業(yè)較少 ........................................................11（3）市場向擁有規(guī)模、技術(shù)、品牌和渠道優(yōu)勢的企業(yè)集中 ....................................12主要生產(chǎn)企業(yè)及其市場份額 ..........................................................................12（1）鍍鋅鋼管、鋼塑復(fù)合管主要生產(chǎn)企業(yè)及市場份額 ............................................12（2）螺旋焊管主要生產(chǎn)企業(yè)及其市場份額 ................................................................13進入本行業(yè)的主要障礙 ..................................................................................14（1）生產(chǎn)準(zhǔn)入壁壘 ........................................................................................................14（2）市場準(zhǔn)入壁壘 ........................................................................................................14金屬制品鋼管制造行業(yè)分析報告.①一般市場壁壘 .....................................................................................................14②中石油、中石化和中海油設(shè)置的市場壁壘 .....................................................15（3）技術(shù)壁壘 ................................................................................................................16（4）資金壁壘 ................................................................................................................16市場供求狀況及變動原因 ..............................................................................17（1）鍍鋅鋼管的供給及變動原因 ................................................................................17（2）鍍鋅鋼管的需求及變動原因 ................................................................................17（3）螺旋焊管的供給及變動原因 ................................................................................18（4）螺旋焊管的需求及變動原因 ................................................................................18（5）鋼塑復(fù)合管的供求及變動原因 ............................................................................20行業(yè)利潤水平的變動趨勢及變動原因 ..........................................................21（1）鍍鋅鋼管利潤水平的變動趨勢及變動原因 ........................................................21（2）螺旋焊管利潤水平的變動趨勢及變動原因 ........................................................21（3）鋼塑復(fù)合管利潤水平的變動趨勢及變動原因 ....................................................21四、影響行業(yè)發(fā)展的有利和不利因素 ..................................................22有利因素 ..........................................................................................................22（1）國家產(chǎn)業(yè)政策大力扶持 ........................................................................................22（2）國家積極財政政策將帶動下游產(chǎn)業(yè)的發(fā)展 ........................................................22（3）國家“十一五” 期間的油氣管道規(guī)劃給本行業(yè)帶來良好的發(fā)展前景 ................23（4）世界石油天然氣輸送用鋼管制造中心逐步向中國轉(zhuǎn)移 ....................................25（5）產(chǎn)品出口環(huán)境的變化為提高行業(yè)集中度創(chuàng)造了條件 ........................................25不利因素 ..........................................................................................................26（1）出口退稅、出口關(guān)稅政策的調(diào)整帶來不利影響 ................................................26（2）反傾銷、反補貼訴訟帶來不利影響 ....................................................................26五、行業(yè)技術(shù)水平 ....................................